Inverse psoriasis: case presentation and review.

Inverse psoriasis is a rare form of psoriasis that affects between 3% and 7% of psoriasis patients. Its appearance and distribution in the flexural skin folds makes it a difficult disease to diagnose, and because it is thought of as a variant of psoriasis, there are very few studies that deal with it exclusively. We present a short case report of inverse psoriasis and a review of the literature on various facets of this disease: epidemiology, histology, clinical presentation, differential diagnosis, and treatment.