Psoriasis

Psoriasis is a skin disease that causes red, itchy scaly patches, most commonly on the knees, elbows, trunk and scalp.

Psoriasis is a common, long-term (chronic) disease with no cure. It tends to go through cycles, flaring for a few weeks or months, then subsiding for a while or going into remission. Treatments are available to help you manage symptoms. And you can incorporate lifestyle habits and coping strategies to help you live better with psoriasis.

Red patches of skin covered with thick, silvery scales
Small scaling spots (commonly seen in children)
Dry, cracked skin that may bleed or itch
Itching, burning or soreness
Thickened, pitted or ridged nails
Swollen and stiff joints
Psoriasis patches can range from a few spots of dandruff-like scaling to major eruptions that cover large areas. The most commonly affected areas are the lower back, elbows, knees, legs, soles of the feet, scalp, face and palms.

Most types of psoriasis go through cycles, flaring for a few weeks or months, then subsiding for a time or even going into remission.

There are several types of psoriasis, including:

Plaque psoriasis. The most common form, plaque psoriasis causes dry, raised, red skin patches (lesions) cover