Plaque psoriasis is the most common type of psoriasis — a group of skin conditions that affect the skin and cause itchy rashes and pain. Plaque psoriasis causes raised red or purple patches covered ...

Q: Please print information on psoriasis. My scalp is dry and itchy, and I have to scrape it. My back is itchy, and so is the skin behind my knees. My toes itch, and so do my eyes. A: Is your ...

Susan Bard, MD, is a board-certified general and procedural dermatologist with the American Board of Dermatology and a Fellow of the American College of Mohs Surgery. Psoriasis is an autoimmune skin ...