Intertriginous psoriasis

Intertriginous Psoriasis: What Is It & How Is It Treated?

Intertriginous psoriasis is a common form of psoriasis that affects the folds of skin. It appears as red, scaly patches of skin in body folds such as the armpits, groin, buttocks, under the breasts, and beneath abdominal folds. It often requires different treatment than other forms of psoriasis.

What Is Intertriginous Psoriasis?

Intertriginous psoriasis, also known as inverse psoriasis, is a form of psoriasis that develops in skin folds around areas like the groin, armpits, buttocks, and under the breasts. It is caused by skin-on-skin friction that occurs when two patches of skin rub against one another. People who are overweight, those with larger body frames, and people who sweat excessively may be more likely to develop intertriginous psoriasis.

This type of psoriasis appears differently from other forms of psoriasis. Rather than the typical red plaques covered in silvery scales, intertriginous psoriasis appears as red, smooth patches that may be itchy or painful. It can also be accompanied by a sour odor.

What Causes Intertriginous Psoriasis?

Intertriginous psoriasis is caused by a combination of skin friction and a genetic predisposition. The condition happens when two patches of skin rub against one another, triggering a reaction that causes a psoriasis flare-up. This is why it is more common in people who have a larger body frame or are overweight. If you sweat excessively, the creases and folds of your skin can also be a breeding ground for bacteria, which could trigger psoriasis.

How Is Intertriginous Psoriasis Treated?

Intertriginous psoriasis is typically treated with topical medications, specifically ones that contain steroids, coal tar, salicylic acid, and/or retinoids. However, these medications may not be enough to effectively treat the condition. More severe cases may require medical intervention, such as ultraviolet light therapy, oral medications, or a combination of both.

For those who experience chronic intertriginous psoriasis, lifestyle changes may be necessary. To help reduce the likelihood of flare-ups, practice good hygiene and avoid tight-fitting clothing that rubs your skin raw. Additionally, you should try to keep your skin dry and use a light moisturizer to keep it hydrated.

Takeaway

Intertriginous psoriasis is a common form of psoriasis that affects the folds of skin, including the groin, armpits, buttocks, and under the breasts. It is caused by skin-on-skin friction and is more common among those with larger body frames or who sweat excessively. Treatment typically includes topical medications, such as steroids and retinoids, as well as ultraviolet light therapy and oral medications for more severe cases.