Your doctor can usually tell if you have psoriasis without a biopsy. There are rare cases where you might need to get one. There’s no cure for psoriasis. But treatment can help you feel better.

Medically reviewed by Susan Bard, MD Having psoriasis, an autoimmune condition that causes inflamed skin patches, can make you more likely to develop certain skin infections. A combination of ...

The T-cell-derived cytokine interleukin (IL)-21 has a key role in the process of epidermal hyperplasia in psoriasis, and blocking this cytokine might be an effective therapy for patients with this ...

a biopsy can be helpful. If the cause is uncertain, a dermatologist will conduct a differential diagnosis to exclude other diseases with similar symptoms. These may include: Guttate psoriasis ...