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Background: Vulvar dermatoses are often difficult to classify due to histopathologic overlap. We aimed to report our experience at a single institution., Methods: A total of 183 non-neoplastic, non-infectious vulvar biopsies were reviewed. Associations between histopathologic features and specific diagnoses were analyzed by Chi-squared tests., Results: Twenty-two biopsies (12.0%) showed two concurrent processes. A limited differential rather than a definitive diagnosis was rendered in 15 cases (8.2%). The final diagnoses included lichen sclerosus (LS) (38.8%), lichen simplex chronicus (LSC) (29.0%), eczematous dermatitis (23.0%), Zoon vulvitis (8.2%), non-specific/resolved dermatitis (5.5%), hidradenitis suppurativa (2.7%), Behçet disease (2.2%), lichen planus (1.6%), ruptured cyst (1.6%), ulcer not-otherwise-specified (1.6%), psoriasis (1.1%), radiation dermatitis (1.1%), sebopsoriasis (1.1%), seborrheic dermatitis (1.1%), epidermolytic hyperkeratosis (0.5%) and granular parakeratosis (0.5%). Early LS and Zoon vulvitis were commonly included as part of a differential diagnosis. LS was associated with wiry collagen with lymphocyte entrapment (p = 0.0188). LSC was associated with zones of pale epithelium (p = 0.0084), and often displayed prominent fibroblasts (p = 0.0555). Zoon vulvitis was frequently misdiagnosed, and was associated with basal keratinocytic crowding (p < 0.0001)., Conclusions: Our study has determined the relative frequencies of a wide variety of vulvar dermatoses, and identified new diagnostic clues for early LS, LSC and Zoon vulvitis., (© 2015 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.)

Chronic pain anywhere on the body can be debilitating and demoralizing. When the pain is associated with sexuality, it can erode self-esteem and diminish relationships. Vestibulodynia (pain in the vulvar vestibule) is poorly understood and presents a clinical challenge to the provider. Although the etiology of vestibulodynia is unclear, and randomized controlled trials of therapies are lacking, the knowledge of current theories and treatments will assist providers in caring for women with this enigmatic problem.

Inflammatory, non-neoplastic epidermal alterations of the vulva can be correctly diagnosed using classification schemes applied to skin elsewhere on the body. A wide range of inflammatory disorders may occur on the vulva, and they may have a similar clinical presentation to HPV lesions. However, HPV is incurable and often is treated surgically. Accordingly, as inflammatory dermatoses commonly occur on the vulva and are often curable with topical therapy, an awareness of these entities and an ability to distinguish them from HPV are imperative.