10 Symptoms of Psoriasis

4. Smooth Patches

Psoriasis doesn’t always cause scratchy or scaly patches. Inverse psoriasis’ characteristic symptoms are smooth lesions of inflammation that usually affect skin folds of the genitals, armpits, between the buttocks, and under the breasts. Because this form of psoriasis is less common than other types, physicians do not fully understand the cause. Most experts believe that trauma, heat, and minor infections each play a role in development.