Inverse psoriasis
Inverse psoriasis is the third common form of psoriasis, affecting 3%-7% of people with psoriasis. With distinct appearance and location, inverse psoriasis is easy to identify. It is typically found in skin folds or tender areas such as armpits, under a women’s breasts, buttocks, groins, genitals, and perianal area. Moisture, sweating, and friction often make the outbreak worse. Obese people are more likely to develop this type of psoriasis, and young infants using diapers are another susceptible group. The skin of the diaper area gets inflamed, and parents will find inverse psoriasis appeared on the baby’s bottom.
Without scaly texture, inverse psoriasis appears as purplish or red erythematous patches that are smooth and shiny. Co-occurrence of inverse psoriasis and other types of psoriasis is possible. For instance, people may develop plaque psoriasis elsewhere in the body. [5]
