Plaque-type psoriasis is usually on elbows, knees and the lower back. The scalp is frequently involved, but psoriasis can occur on any surface of the skin including nails. Some patients develop blisters on their skin in the affected areas, and this can be very painful.
The rash of psoriasis can itch, but often it does not have symptoms. Most patients with psoriasis are embarrassed by its appearance, and they dress to hide it from others. There is a significant psychological impact of the disease as it sometimes prevents people from being hired for jobs, and it can limit social activities because other people think psoriasis patients are contagious.
