Which body area is most commonly affected by psoriasis?

Psoriasis is a chronic autoimmune skin condition that can affect any part of the body, but it most commonly affects the scalp, elbows, knees, and lower back. Other areas that may be affected include the palms of the hands, soles of the feet, nails, and genitals. In some cases, psoriasis can also affect the face and neck. The severity and extent of psoriasis can vary widely between individuals, and the condition may go through periods of flare-ups and remission.