Inverse psoriasis is a type of psoriasis that affects the folds and creases of the skin.

This condition is characterized by red, shiny, and smooth patches of skin, which may be sore or itchy. Inverse psoriasis is also known as flexural psoriasis, as it typically appears in the flexural areas of the body where the skin folds, such as the armpits, groin, and buttocks.

The exact cause of inverse psoriasis is unknown, but it is believed to be an immune system disorder that causes skin cells to grow too quickly. The overgrowth of skin cells leads to patches and lesions on the affected areas. Certain factors can trigger or exacerbate inverse psoriasis, including sweating, friction, and skin infections.

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