Psoriasis is a relatively common autoimmune condition that causes various types of rashes on the skin. It affects approximately two percent of the U.S. population. The most common psoriasis rash is characterized by red, dry, sometimes itchy, patches on your scalp, knees, elbows, and lower back. Psoriasis can appear suddenly as a widespread rash, sometimes triggered by an infection. Conditions of psoriasis that occur in folds of the skin, such as armpits, and folds of the groin (inverse psoriasis), or rashes on palms and soles (pustular psoriasis) are less common. Your provider will determine the best treatment for your psoriasis depending on its surface area, location and severity of symptoms. For mild psoriasis or psoriasis involving smaller areas of skin, your provider may recommend a number of prescription topical medications. For moderate to severe psoriasis, treatments range from phototherapy to oral medications that suppress the immune system and biologic response modifier medications, developed over the last 20 years to treat psoriasis and psoriatic arthritis.
Evaluating and treating psoriasis can be challenging, but your provider will partner closely with you to develop the best possible treatment regimen.