Abstract
Quantitative sensory testing (QST) measures perception thresholds of defined intensities of physical stimuli (e.g., temperature, touch, pressure, vibration). The frequency and severity of subjective sensory effects (itch, burn), though less quantifiable, can be assessed under defined conditions such as trials of hygiene products. This reviews two sources of published research on sensory perception on the vulva relative to extragenital sites: (1) systematic quantitative sensory testing with defined stimuli and (2) vulvar sensory effects reported in prospective randomized trials of external feminine hygiene products. In healthy women, the vulva is generally less sensitive to mechanical stimuli (punctate touch and vibration) than other body sites. Vulvar sensitivity to mechanical stimuli declines after menopause, but is restored by estrogen supplementation. Product trials of feminine wet wipes suggest that vulvar perception of stinging and of skin wetness also is attenuated after menopause, although perceptions of burning or itching appeared to be unaffected. QST also reveals that women with localized provoked vulvodynia have an elevated response to vestibular touch and pain as well as to pain on extragenital sites. More systematic, standardized conditions are needed to validate the continued use of QST on the vulva and to better define the characteristics and intensity of subjective vulvar sensations.
Portions of this chapter appeared in an open-access article by Farage et al., The Open Women’s Health Journal, 2012 6: 6–18, and are reproduced under the terms of the Creative Commons Attribution License.
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Farage, M.A., Miller, K.W., Zolnoun, D.A., Ledger, W.J. (2015). Sensory Perception on the Vulva and Extragenital Sites. In: Farage, M., Miller, K., Fugate Woods, N., Maibach, H. (eds) Skin, Mucosa and Menopause. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-44080-3_15
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