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.

UV treatment for psoriasis is a real thing — but so is the fact that tanning beds cause skin cancer. We got the truth about indoor tanning and psoriasis.

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 ...