What is it?

Inverse psoriasis is a disease that causes your skin cells to reproduce very quickly. There are areas of your skin that rub against each other when you have this type of psoriasis.

A common term used to describe inverse psoriasis is autoimmune disease. However, the antibody that causes the condition has not yet been identified. As a result, it is classified as an immune-mediated disease. The exact cause is unknown, but experts believe it has something to do with your immune system.

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Signs & symptoms

Inverse psoriasis commonly affects sensitive skin areas that rub against each other, such as skin folds. The most common places that inverse psoriasis occurs include:

In the crease of your neck.

In your armpits.

Beneath your breasts.

Between your belly folds.

Between your buttocks.

In your groin.

Around your penis, scrotum or vulva.

In your inner thighs.

A shiny, smooth, discolored (brown, pink, purple or red) rash.

Cracks (fissures) in your skin creases.


Moist patch of skin.


In order to rule out other possible causes of your rash, your healthcare provider may perform several tests. This is a differential diagnosis. The tests may include:

Allergy test.


Blood tests to check for causes of a rash that aren’t related to inverse psoriasis.


In order to relieve your symptoms, your healthcare provider may prescribe or recommend the following:

Calcipotriene skin ointment.

Corticosteroid creams or ointments.

Injectable medicines.


☝️ This is not a substitute for professional medical advice. Please consult with your physician before making any medical decision.

Learn more about our editorial process for content accuracy.

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