Axial spondyloarthritis in the USA: diagnostic challenges and missed opportunities—comments on the article by Danve A & Deodhar A
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I read the interesting manuscript entitled Axial spondyloarthritis in the USA: diagnostic challenges and missed opportunities which has been recently published by Danve A & Deodhar A in Clinical Rheumatology . They included in their paper: “none of these physical examination techniques, including spine mobility measurements, reliably distinguish inflammatory diseases of the spine, such as axial spondyloarthritis, from common degenerative diseases of the spine”. I am opposed to this opinion. Due to lack of reliable diagnostic biomarkers, an accurate physical examination along with patient history is the best way to diagnose on time. As Danve A & Deodhar A believe, the low awareness of non-rheumatology physician about spondyloarthropathy is one of the causes of delayed diagnosis in this disease . However, accidental coincidence of lumbar discopathy as a common cause of back pain and as a result, the lack of attention to inflammatory manifestations can be one of the other causes of diagnostic delay in these patients . The gradual and insidious progress of disease in some patients which may lead to the patient’s compliance with their illness and consequently, lack of timely referral to the doctor, may be another reason for this delay. Negative HLA-B27 (about 10% of patients with ankylosing spondylitis (AS) in the USA and Europe and 30% in Iran and other Middle Eastern countries), low education level of patients, and the enthesitis have been reported as other associated factors of diagnostic delay in patients with AS in Fallahi et al. study . Also, negative family history of HLA-B27, absence of extra-articular manifestations, and juvenile age at onset were among other factors associated with diagnostic delay in some studies [4, 5, 6]. In conclusion, spending adequate time for taking history and physical examination especially in patients with low education levels, raising awareness of other physicians involved with back pain, timely referral of patients to the rheumatologist, attention to the presence of enthesitis including heel pain, and finally refrain from relying too much on laboratory markers include HLA-B27, erythrocyte sedimentation rate, and C-reactive protein may help reduce diagnosis delay in patients with AS.
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- 1.Danve A, Deodhar A (2018) Axial spondyloarthritis in the USA: diagnostic challenges and missed opportunities. Clin Rheumatol. https://doi.org/10.1007/s10067-018-4397-3