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Traditional Chinese Medicine Explanatory Models of Depressive Disorders: A Qualitative Study

  • Wan Kam
  • Zhang-Jin Zhang
  • Sofie BäärnhielmEmail author
Open Access
Illness Narratives
  • 214 Downloads

Abstract

Traditional Chinese medicine (TCM) is an alternative medical system utilised by many Chinese. However, the knowledge of TCM concepts of depression is limited amongst clinicians with training in Western biomedicine. The purpose of this study was to obtain a better understanding of the conceptualisation of depression from a group of TCM practitioners. Semi-structured interviews in Chinese were carried out with 10 TCM practitioners in Hong Kong. A case description of major depression disorder (MDD) was used as a basis. Interview texts were transcribed, translated and analysed using qualitative content analysis. Most informants identified the case as a depression pattern, a term that lacked clear definition and standardised criteria. The mechanism of disease for MDD symptoms were regarded to be liver-qi dysregulation and an imbalance of yin and yang. The TCM practitioners implemented individualised diagnosis, treatment, and a holistic concept without clear distinction between the mind and the body. This contrasted with the biomedical tradition of separating psychologisation and somatisation. The meanings given to the concept of depression did not correspond with current DSM or ICD definitions, and the TCM normativity can result in variations in explanatory models.

Keywords

Traditional Chinese Medicine Depression Cultural psychiatry Explanatory model 

Background

For depression, about 90% of all patients globally are of non-Caucasian origin (Lee, Kleinman, and Kleinman 2007). Cross-cultural psychiatry has been an important subject for research since the term was coined by Arthur Kleinman in the late 1970s (Kleinman 1977), and has evolved to become the concept of cultural psychiatry today as recognition of the broad nuances of illness presentation, patient experiences and medical interpretations world-wide. China has the largest population per country in the world, and how the Chinese express depression is one of the fields being regularly explored, from Kleinman’s classic study on neurasthenia and depression (Kleinman 1982) to a more recent review on how Chinese in Western countries experienced depression (Ahmad et al. 2018). Western biomedicine has been well-established across China but 10–20% of the Chinese population still seek Traditional Chinese Medicine (TCM) service, a tradition that dates back centuries (Chung et al. 2014; McQuade et al. 2012). With the modern globalisation and population movements across borders, improving Western medical professionals’ understanding of how TCM practitioners conceptualise and treat symptoms associated with depression can be of major public health significance.

There are studies demonstrating the effectiveness of TCM treatment methods on mental health, for example for depression, chronic pain, and climacteric syndrome (Eisenhardt and Fleckenstein 2016; McKee et al. 2013; Tao et al. 2016; Yeung et al. 2014). However, few studies have examined how TCM practitioners diagnose depression and interpret it as a concept. In a broader spectrum, what do TCM practitioners utilise as explanatory models (EM)? EM refer to how a person perceives, interprets, expresses, explains symptoms and experiences, while they also influence the treatment process (Kleinman 1978). Research published in Chinese is difficult for non-Chinese clinicians to access. Descriptions of TCM theories and definitions are found in various TCM textbooks, most of which are written in Chinese by small groups of senior practitioners basing their work on ancient scripts and individual experiences. All of this makes it difficult for psychiatric professionals in Western countries to gain insight into TCM. For a better understanding, learning about the EM of TCM practitioners is important.

Purpose of the Study

The overarching aim of the study was to gain an improved understanding of the conceptualisation of depression among a group of TCM practitioners. The specific aims were to find out more about the following: a) how a group of TCM practitioners perceive depression as a phenomenon and a term; b) what treatments they would recommend for a depressed person; c) how they compare TCM and Western biomedicine theories concerning the diagnosis and treatment of depression.

Methods

Study Design

Choice of Method

We chose to carry out a qualitative study based on open-ended, semi-structured interviews in Hong Kong and used a case vignette approach. Vignette-based methodologies are often used to examine judgements, ‘real life’’ behaviour, and decision-making processes, including clinical judgements made by health professionals (Evans et al. 2015). Content analysis (Krippendorff 2004) was performed on the collected data. Hong Kong was chosen as the research location because of its well-established research environment, good public access to medical care, and its strong Chinese traditions. In Hong Kong, 50–60% of people would visit TCM clinics for medical consultation (Wong et al. 2011).

Recruitment of Informants

Subject recruitment was carried out from August to October 2016 at two locations: (1) Clinical Centre of Teaching and Research (Central), School of Chinese Medicine, The University of Hong Kong; (2) The Hong Kong Buddhist Association – The University of Hong Kong Clinical Centre for Teaching and Research in Chinese Medicine. The locations were chosen because they were the two clinics attached to the School of Chinese Medicine, the University of Hong Kong, which has its ruling ethical committee clearly appointed. Both centres regularly receive TCM students and young TCM practitioners for training. The clinical centre at Central has fewer but more senior practitioners whilst the Buddhist Association clinical centre has a larger proportion of younger practitioners. Recruitment was carried out at both centre iteratively to optimise diversity of informants.

A purposeful sampling was chosen as this an approach for identifying and selecting information-rich informants and for an effective use of limited resources. It entails identifying and selecting individuals particularly informed about or experienced with a phenomenon of interest (Palinkas et al. 2015). In this study this was conducted by the first author initially approaching random practitioners at the clinics for recruitment. As the process continued, data analysis (familiarising with the data by listening to the recordings and starting the transcription) started parallel to the interview process to identify informant categories and content themes. Both clinics had a list of the names and education qualifications of its practitioners. Each informant was asked to fill out a background data sheet. This allowed a strategic selection of informants with the most diverse backgrounds possible in terms of age, gender, religion, and education.

Informed consent was obtained from all individual participants included in the study, in oral and written form.

Sample

Sample Characteristics

The collected background data sheets showed the following:

Informant gender

Number of informants

Average age (min–max)

Educational background Mainland China: Hong Kong

Recruitment site central: Buddhist Hospital

Male

5

43 (26-64)

5: 0

3: 2

Female

5

41.2 (30-60)

3: 2

3: 2

Of the 10 TCM practitioners interviewed, 5 reported that they did not have any religion, 2 reported believing in Christianity, 2 in Buddhism, 1 gave their religion as Buddhism/Taoism.

Data Collection

A case description (Online Appendix 1) aiming to demonstrate an example of major depression disorder was validated by a psychiatrist colleague in Stockholm and one in Hong Kong. It was shown to each informant at the beginning of the interview.

Interviews were carried out by the first author in Cantonese or Mandarin depending on the preferred language of the informant. The TCM practitioners were asked about their views on the case presented, the diagnosis and treatment they would give, whether TCM had a term for depression, and their opinions on how TCM and Western biomedicine compared on the subject. The interviews were audio-recorded. Complementary side-notes were made during individual interviews.

Data Analysis

Interviews were transcribed in Chinese and translated into English verbatim. For the quality control and validation of transcribed interview texts, a third-party translation firm was contracted. Five of the ten transcriptions were randomly chosen for proofreading and validation. As all transcription and translation were done by the first author, the validation of the five transcripts was extrapolated to the rest.

The texts were coded inductively after each interview had been transcribed. The coding was conducted by the first author on the translated English transcript with constant reference to the original text in Chinese in order to cross-check expressions and context. The codes, categories, and themes were continuously discussed and consensually adjusted in discussions with first the last author and finally with all authors.

The coding process was carried out with the aid of Open Code. Open Code is a software for coding qualitative data from text information, developed by the University of Umea in Sweden. Open Code only supports code synthesis in two stages. Subsequent synthesis analysis was performed manually. General principles of content analysis (Krippendorff 2004) were used throughout the analysis process. This applied that (1) codes were assigned to meaning units identified from the texts; (2) codes were grouped into preliminary categories; (3) broader themes synthesizing the findings were identified and redefined. An illustration of this process is given in Table 1. The meaning unites were phrases from transcripts. Codes were indexing units, which were then organised into descriptive categories. Themes were built from categories, and used to construct the final interpretations. To facilitate the understanding of the contents and the analysis process, the WHO document for international standard terminologies on traditional medicine in the western Pacific region (WHO Regional Office for the Western Pacific 2007) was used as a translation guide and a key for looking up definitions of TCM terms.
Table 1

Examples from analysis of translated transcripts are as below

Meaning units

Code

Category

Theme

We look at the main symptom and the main complaint

Definition of depression pattern

TCM psychiatric diagnosis

Depression pattern

The most typical is insomnia. The second one is that the state of mind would be lower.

Sleep problem;

No interest in anything

Diagnosis of case description;

Signs of depression pattern

TCM includes it has just started, staying silent, no interest in anything

Unwilling to communicate;

No interest in anything

Signs of depression pattern

This depression pattern is mainly due to an imbalancein the functions of viscera and bowels

Definition of depression pattern;

5 viscera 6 bowels and emotion

TCM psychiatric diagnostics;

Mechanism of depression

Depression pattern;

Mechanism of depression

Findings

The following four themes were identified from the interviews: depression pattern, diagnostics and treatment; mechanism of depression, and the significance of the liver; the significance of qi; and a holistic view.

None of the informants mentioned anything related to religion in their process of setting diagnosis and reason around treatment. Purposive recruitment to include education background from mainland China and Hong Kong was carried out. Both practitioners educated in mainland China and Hong Kong cited a proportion of 30–40% of their university curriculum being in Western biomedicine.

Depression Pattern, Diagnostics and Treatment

All the informants thought the case description showed a condition very commonly seen in clinical practice. Eight of the ten informants identified the case as depression or depression pattern. Amongst the eight, six informants recognised depression pattern as the sole diagnosis, one offered a differential diagnosis of menopausal syndrome, one first set headache as the diagnosis and reached the conclusion of depression pattern later during the interview. Of the remaining two informants, one stated that a diagnosis could not be reached due to lack of information, and one set menopause syndrome as diagnosis.

According to the informants, common signs of depression patterns were: low mood, lack of essence-spirit, lack of energy, insomnia, lack of appetite, concentration difficulties, no interest in anything, pessimistic thoughts, worries a lot, unwilling to communicate with others, unable to work. General discomfort and pain were also identified as depression symptoms. In terms of TCM examination methods, the pulse could be string-like, but there might not be any obvious pathologic findings in terms of physical examinations.

However, the informants considered depression pattern to be a broader concept than major depression disorder. There were no set criteria to be met: no strict requirement of duration or number of symptoms. There could also be symptoms not mentioned in the DSM-5. One informant described it as follows, “…the beginning, the initial pre-depression symptoms, we also call it depression… young people who lose their tempers [and] scold people, that we also call depression pattern” (TCM practitioner 10). According to the interviews, depression pattern could be caused by underlying somatic illness, even temporary physical discomfort.

Eight informants emphasised that “the correlation of all four examinations (四診合參)” was fundamental for diagnostics. For four informants, the case description only contained ‘inquiry’, and a precise pattern identification was not possible due to the lack of results from the other three examinations. Three informants emphasised the importance of inquiring about the menstruation status when the patient is a woman. Menopausal syndrome was named as an important cause of symptoms/differential diagnosis by four interviewees.

Concerning treatment, seven informants considered the case description insufficient for treatment planning. This was due to it only provided information for inquiry, and lacked results for the other aspects of the four examinations (Table 2). Eight informants suggested a combination of medicinal formulas, acupuncture, psychotherapy, massage, music therapy, exercise, diet adjustment, or adjustments in the living environment. The informants considered it normal that each TCM practitioner might identify different patterns and choose different treatment methods given the same case, depending on the practitioner’s experience.
Table 2

Definition of the four examinations in TCM (WHO Regional Office for the Western Pacific 2007: 80–101)

Terminology (Chinese character; Mandarin phonetic)

Meaning

Inspection ( Open image in new window ; wang4)

Observing the patient’s emotions, facial expression, complexion, physical condition, condition of the tongue, secretions and the distribution of superficial venules

Listening and smelling ( Open image in new window ; wen3)

Listening to the patient’s speech, voice, articulation, breathing, cough; smelling the patient’s odour from the mouth, and body

Inquiry ( Open image in new window ; wen4)

Asking the patient about the complaint and the history of the illness

Palpation ( Open image in new window ; qie4)

Touching and pressing the body surface with the hand or fmgers, examination of the pulse and locations of complaint

“However, even though the opinions are different maybe all would solve her problem too. So, that is our TCM’s, a little special feature [TCM] has. That is the person’s, the thoughts the ways of thinking, are different, so, the formulas prescribed are also different … Because our opinion is a thinking more of philosophical character. Our medical science is one that is more of philosophical character. So it’s like, all roads would lead to Rome as such.” (TCM practitioner 9)

… they all follow the same theories and principles of TCM. It is just that, they are all just measures. Just like when you have a battle to fight, say for example knife, spear, sword, halberd, axe, tomahawk, hook, and prong, these things, it all depend on which one suits you better. Ah. In order to achieve the goal, which one of them you can use more unrestrainedly. (TCM practitioner 1)

Mechanism of Depression, the Significance of the Liver

According to three informants, the key to TCM judgement and treatment was the mechanism of the disease (病機, pathogenesis), not the diagnosis. One informant said, “[we are] very meticulous about whether the capture of mechanism of disease is accurate” (TCM practitioner 9). Regardless of diagnosis, if the mechanism of disease was identified to be the same then the treatment for the condition would also be the same. One of the informants drew a diagram to demonstrate the relation between diagnosis and mechanism of disease (Fig. 1).
Fig. 1

The relation between diagnosis and mechanism of disease as illustrated by one of the informants

According to seven informants, there were five viscera in the human body, closely linked to each other and each with different functions. The liver was considered to govern emotions, and the free-coursing of qi and blood. When the liver functions weakened, the flow of qi and blood became disturbed and obstructed. Symptoms of liver depression, such as the ones in the case description, would then occur. Four informants thought that liver depression was more commonly seen in middle-aged women. If liver depression became more advanced, it could transform into liver fire, leading to symptoms such as agitation, dryness in the mouth, headache etc.

Disturbance in one viscus would lead to dysfunction in other viscera. Six informants answered that inquiry into accompanying symptoms was important. Depending on which other viscera were affected, different accompanying symptoms might appear. The spleen was the viscus most closely related to the liver.

there is a quote in TCM, it says, ‘see an illness of the liver, you know that the liver passes over to the spleen, so you should first strengthen the spleen’. When the liver has an illness you need to consider the spleen. The five viscera are interlinked (TCM practitioner 4)

Four of the informants deemed the case description to be a case of liver depression invading the spleen.

The Significance of qi

The concept of qi appeared in almost all aspects in the interviews, including examination, pattern identification, mechanism of disease, and principles of treatment. In TCM, qi is the basic element formed everything. It flows within the body, maintaining all functional activities of an organic body (WHO Regional Office for the Western Pacific 2007: 13–18). According to the informants who mentioned disturbances in qi as a disease mechanism for the case described, symptoms of qi depression and qi deficiency included fatigue, difficult to concentrate, discomfort and pain in the chest, short of breath, constipation, dry mouth, and agitation. Changes in qi movement would affect vital functions in the body and cause changes of mood.

In pattern identification, depression pattern could be further categorised into 6 subtypes, one of which was qi depression (氣鬱). As for the mechanism of disease, qi deficiency was identified by six informants. The main symptom of qi deficiency was lack of energy. It might occur either in general or in specific organs such as the kidney, and could be caused by various factors including aging, diet, sleep habits, stress etc. The following quote illustrates:

“Internal causes are herself per se is entering that age stage, qi and blood start to become not enough fully exuberant, when there is insufficiency in liver-kidney, [it becomes] easy to be induced by receiving some external causes. We call it healthy qi insufficiency, then pathogenic qi easy-, easy to invade liver.” (TCM practitioner 9)

The obstruction of qi was also mentioned as the main cause of symptoms in liver depression. Since a disturbance in qi was considered a main cause of depression, different treatment methods would be used with the goal of removing qi obstruction and nursing qi.

A Holistic View

All informants considered depression symptoms to be caused by a combination of intrinsic and extrinsic factors. Six emphasised that TCM always considered from a holistic perspective. One informant explained, “Because a person is living in this world, everything you come in contact with would affect your body.” (TCM practitioner 1) This was considered a major difference between Western biomedicine and TCM.

Intrinsic factors include aging, hormonal influences such as menopausal changes, physical illness, and the personality of the individual. Extrinsic factors include climate, diet, stress, living environment, living habits, interpersonal relations, and more.

Pressure from family and pressure from work were considered two major extrinsic causes of depression pattern. Two informants thought that depression symptoms were especially common in large cities. Economic demands would be higher in cities. Limited space meant less distance between persons, which would in turn increase anxiety and the risk of conflict.

One distinct feature was the theory of yin and yang. Originating in ancient Chinese philosophy, yin and yang were two opposite but interrelated forces found in everything in nature. Yin was the feminine, passive counterpart of the masculine, active yang (WHO Regional Office for the Western Pacific 2007: 21). Three informants thought that modern people were more susceptible to mood disorder because they no longer follow the natural diurnal rhythm. Reversing the diurnal rhythm would violate the harmony of “nature and human becoming one (天人合一)”. This means that the person cannot recuperate their yin and yang in an optimal way, thus becoming more susceptible to illness. One informant cited that “heavy yang leads to manic psychosis, heavy yin leads to depression” (TCM practitioner 5). Depression pattern could be due to a disturbance of yin or yang, though more often it correlated to a disturbance of yin.

The holistic view did not only apply to diagnostics but also treatment: “We have [the theory of] choosing the appropriate solution on the basis of person on the basis of time on the basis of place” (TCM practitioner 9). As the environment for the individual changed, and treatments started to affect the body, the mechanism of disease would also change. This constantly changing process was referred to as the concept of transmutation (變).

The holistic view and transmutation were the reasons why informants thought TCM could not and should not be studied and analysed in a statistically evidence-based way. They considered Western biomedicine and TCM to be two totally different medical systems that could collaborate but could not be combined. One informant said,

the advantages of TCM, I think it looks from a macroscopic perspective. It looks from an integrated/comprehensive perspective, yes, from a perspective that sees a person as a real living organism and putting him in a natural environment. Whereas, Western medicine, it usually, looks at a person from a more, relatively a more mechanic perspective, ah. It also considers the biological perspective. However, it overweighs on a microscopic, mechanic, ah, this kind of perspective (TCM practitioner 1)

From another informant:

in WM they view from the anatomical perspective… But TCM is reflected from a dynamic. It is (short pause) that is there is a live person giving you a reaction to let you to, to infer her inside internal change and to treat based on that (TCM practitioner 5)

Nevertheless, the informants considered biomedicine to be important in their practice. Three informants mentioned that they would recommend the patient in the case description to first go through a biomedical health check to screen for abnormalities. One practitioner also explained:

to enable the patient to trust you as a doctor you must have WM knowledge, and TCM’s this pure treatment method. WM’s [knowledge you] must have, need to tell her, this illness in WM science is what illness, and how we would treat in TCM. But TCM during treatment, do not be like WM and treat against symptom, ah headache then painkiller, ah, for example stomach is not good prescribe stomach medicine, this is not okay. (TCM practitioner 8)

Discussion

This study gave insight into the thought processes applied by these interviewed TCM practitioners when encountering a case of major depression disorder. It revealed some of the complexity of TCM in clinical applications.

On Methods

A limitation with the study was that all informants were recruited from two university medical centres, thus there might be a selection bias for TCM practitioners who were more knowledgeable than average about mental illness in Western biomedicine. All the practitioners interviewed had studied Western biomedicine as part of their university TCM programme. This implied a spread of biomedical thinking to the current generations of TCM practitioners, which could have modified the explanatory models by the informants. In the interviews, the conventional term ‘Western medicine’ (西醫) was used by both the first author and the informants without further discussion on the definition of the term.

In data analysis, one difficulty was the translation accuracy of the interview text. The Chinese language has a higher context level than English. The same word in Chinese can have various meanings in English. One example would be the word ‘jīng-shén’ (精神) in Chinese: it can be translated either as essence-spirit (TCM terminology), spirit (common language), or psychiatric (biomedical terminology). Whilst the first two may not differ much in their meanings, the last context is significantly different. Words with the same pronunciation can also cause confusion in the transcription process. One such example was the word ‘zhèng’. It can be the character 症, meaning symptom; or 證, meaning pattern.

Another limitation was that the case vignette design only provided information for inquiry, one of the four TCM examination methods, to assess a patient. Nonetheless, inquiry is a major TCM diagnostic approach through which most clinical information can be obtained. This has been reflected in the Consensus-based recommendations for case report in Chinese medicine (CARC) (Fu et al. 2016) and ancient TCM bibliographies in which there have been numerous case reports recorded. Clinicians in Hong Kong are familiar with using incomplete four examinations information to deduce a diagnosis because case vignettes are used as an important component in the Hong Kong registered Chinese medicine practitioner examination. The findings obtained in this study are still meaningful in comparing TCM diagnostic modes with that of Western biomedicine, and contribute to important information about TCM understandings, practice and reasoning concerning medical decision making.

Regarding strengths, firstly, TCM practitioners of various ages and educational backgrounds were recruited. This gave a broad informant diversity. Secondly, all interviews were conducted by the first author, thus allowing flexibility during and after each interview to explore the topics brought up by informants. Thirdly, all transcriptions were carried out by the first author, and uncertain phrases were transcribed and translated after consulting the second author. This minimised the uncertainties in context and word choice. An additional strength was that the three authors come from different backgrounds and could review the data from stand-points bridging TCM and Western biomedicine. The first author is from Hong Kong and has been medically trained in Sweden. The second author is a TCM professor and practitioner, who has worked in mainland China and Hong Kong. The third author is from Sweden and a psychiatrist educated in Sweden. By going through the translations, coding, and analysis results together, understanding and knowledge from both Western biomedicine and TCM perspective were applied in the process.

On Findings

One of the most significant findings was that each informant gave related yet different explanations of the causes of symptoms, and several different patterns were identified based on the same case description. According to the informants, there was a general acceptance of judging the same symptoms differently, and the diagnostic criteria of major depression disorder in ICD and DSM were not to be equated with the diagnostic parameters of TCM depression pattern. There were no standardised criteria for depression pattern among the interviewed TCM practitioners. This also implied that designing a study to evaluate the effectiveness of TCM treatments would be difficult. This limitation was also recognised in a review on TCM treatment for depression (Yeung et al. 2015).

Pattern identification (辯證) was central in TCM diagnostics for the study participants. The Chinese word ‘pattern’ (證) is defined by WHO as:

The diagnostic conclusion of the pathological changes at a certain stage of a disease, including the location, cause, and nature of the disease as well as the trend of development; conditions suggesting appropriate treatment; and condition specific to the individual (WHO Regional Office for the Western Pacific 2007, 79).

This is broader than the definition of ‘disease’ or ‘syndrome’ in Western biomedicine, and reflects a holistic perspective of diagnostic thinking. The emphasis on ‘a certain stage of a disease’ entwines with the concept of transmutation that the pathogenesis is in constant change as reactions to the environment and interaction between organic systems.

The TCM theoretical model of five viscera (Table 3), in combination with qi, and yin-yang, make TCM explanatory models difficult for doctors trained in Western biomedicine to understand. Based on the interviews, the liver was seen as the main viscus involved in the mechanism of depression. This EM is in line with the description of TCM in a 2013 article on Korean Hwa-byung and depression (Suh 2013) but different from another conceptualisation with the heart as the main viscus involved (Miller 2006). The liver in TCM differs from the liver in WM, with emphasis on an abstract system in constant interaction with other viscera and elements, not on the biological organ. In depression patterns, the roles of liver and qi are intertwined, covering the majority of possible mechanisms of disease.
Table 3

The five viscera and their functions according to TCM (Zhou 2006)

Viscus

Function

Governs the following emotion

Heart

Controls blood circulation end mental activities

Joy, Fright

Lever

Stores, blood, facilitates the coursing of qi, regulate menstruation

Anger

Spleen

Transport and digestion of nutrition, keep the blood flowing within the vessels, and is closely related to the limbs and flesh

Thinking

Lung

Control respiration, dominate qi, related to the skin and hair

Anxiety, Sorrow

Kidney

Store vital essence and qi, promote growth mental development, reproduction, and urinary function; also have a direct effect on the condition of the bone and marrow

Fear

A different conceptualisation of personhood may be a reason behind the contrasting holistic EM described by the TCM informants, and the historical tradition of separating somatisation and psychologisation in Western biomedicine. In a 2012 review, selfhood was defined as being in the mind (Ryder et al. 2012). North Atlantic societies have developed an egocentric view (Eriksen 2017: 20–23), the ‘person’ is equalled to the ‘self’, and ‘self’ is identified with self-knowledge and consciousness. The Western biomedical explanatory models of depression are historically rooted in psychologisation. Somatisation reflects a defence mechanism that limits the mentalising of emotions and important psychological experiences, and has been viewed by some as an immature response to problems (Ryder and Chentsova-Dutton 2012).

In China, the individual identity is defined by his position in relation to institutions, and his (last) name that signifies an ancestral lineage (Mauss 1985). This relational view can explain why the two major extrinsic causes emerged to be pressure from family and pressure from work, and that multiple informants lifted changing the living environment as part of treatment. Informants emphasised selfhood as a dynamic integration of the body, mind and surroundings of the individual, with no habitual emphasis on any of the three. Fundamental TCM theories on how viscera and bowels interact with mood, with special focus on the liver, imply a thought pattern that revolves around somatic features during constructions of EM. Qi, another unique concept in TCM, is also closely linked to the physical conditions of the individual. This means that both TCM practitioners and laypersons seeking consultation may focus on somatic expression of a depression pattern, without actual presence of somatisation.

Even though it takes into account interactions between the intrinsic and extrinsic factors, Western cognitive models seek to find a focal deviation (Arieli and Sagiv 2018), e.g. research on the serotonin system to explain the alteration on the patient’s mental status. The interviews showed that TCM aims to find and regulate a balance amongst the different viscera systems, between yin and yang, the patient’s interchange with his environment. TCM seems not to place a focus on singling out a particular biochemical or organ system. This echoes with the holistic contextualisation in anthropology stating that every phenomenon must be understood in a dynamic relationship with other phenomena.

Implications of Findings

The findings from this study with interviews with ten TCM doctors cannot be generalised. Nevertheless, the interviews yielded an insight into a Chinese ontology much different from that of Western biomedicine, and can form a pilot ground for further investigations. The following can be considered: (1) an interview study to explore how TCM practitioners view the concepts of psychologisation and somatisation; (2) since liver depression seems to be the most commonly identified pattern in clinical depression (Yeung et al. 2015), follow-up interview studies can be planned, with focus on this pattern type to further investigate how TCM practitioners would identify the pattern and recommend treatment.

The TCM holistic thinking resonates with the embodied enactive model in that organism-environment interactions shape the process of psychopathology, and that bodily experiences are important constructs of explanatory models (Kirmayer and Ramstead 2017). Western biomedicine professionals may risk misinterpreting a Chinese patient’s illness history or symptom narration if comprehension of the TCM explanatory model is lacking, not the least as TCM rhetoric is commonly integrated into Chinese laypersons’ rationale for self-care (Chung et al. 2014). As population growth and globalisation continue, Western clinics will likely encounter Chinese patients more frequently. A broader knowledge in alternative medical thinking amongst Western biomedicine doctors can also provide an additional service and treatment route for their patients regardless of ethnicity. The findings of this study are the beginning for such capacity building for Western biomedicine doctors, to increase their understanding for TCM so that communication and collaboration between the two medical systems may be strengthened and the public health service improved.

Conclusion

The interviewed TCM practitioners emphasised an individualised diagnostic and treatment system based on each patient, with consideration of the environment the patient inhabits. The TCM practitioners focused on finding the mechanism of disease in terms of viscera, qi, and a balance of yin-yang. For the informants, the meanings given to the concept of depression did not correspond with current DSM or ICD definitions.

The TCM normativity emerged from the interviews contrast with that of Western biomedicine. Psychologisation and somatisation are in a way culture-bound styles of narration. Further investigation into the psychopathology models of TCM can broaden the definition of normalcy in Western biomedicine. This in turn can nourish communication and collaboration between Western biomedicine and TCM, improving public health service and enabling better care for patients.

Notes

Acknowledgements

Our thanks for travel funding to Cullberg Scholarship granted to WC by the Natur & Kultur foundation, Sweden. For validation of the case description to Dr M Zeitelhofer Adzemovic, specialist in psychiatry, Psychiatry Northwest Stockholm, Sweden; and Dr DH Lam, specialist in psychiatry, Chinese University of Hong Kong. The validation of the translations of 5 transcripts was carried out by a licensed translator at Adams&Co, Hong Kong.

Compliance with Ethical Standards

Conflict of interest

On behalf of all authors, the corresponding author states that there is no conflict of interest. The authors alone are responsible for the content and writing of the paper.

Ethical Approval

All procedures performed in this study involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Ethics approval was obtained from the ethics committee: Institutional Review Board of the University of Hong Kong/Hospital Authority Hong Kong West Cluster. The assigned IRB reference number was UW 16-184.

Informed Consent

Informed consent was obtained from all individual participants included in the study.

Supplementary material

11013_2019_9628_MOESM1_ESM.docx (12 kb)
Supplementary material 1 (DOCX 11 kb)

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Authors and Affiliations

  1. 1.Transcultural CentreNorth Stockholm Psychiatric ClinicStockholmSweden
  2. 2.The University of Hong Kong School of Chinese MedicineHong KongChina
  3. 3.Department of Clinical NeuroscienceKarolinska InstitutetStockholmSweden

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