It mostly affects the skin and joints, but it also may affect the fingernails, the toenails, the soft tissues of the genitals and the inside of the mouth. Psoriasis can also affect the fingernails and toenails, causing pitting, thickening, and irregular contour of the nail. Next Page: Nail Psoriasis Causes and Risk Factors. 1. Lesions vary in size from one to several centimetres.
Unpredictable and irritating, psoriasis is one of the most baffling and persistent of skin disorders. Psoriasis typically occurs on the knees, elbows, and scalp, and it can also affect the torso, palms, and soles of the feet. Eczema and psoriasis are some of the most challenging skin conditions encountered by skin care professionals. Psoriasis, which affects at least four million Americans, is slightly more common in women than in men. Pustular psoriasis, which can be limited to one part of the body (localized) or can be widespread, may be the first symptom of psoriasis or develop in a patient with chronic plaque psoriasis.
Psoriasis is considered mild if it affects less than 5 percent of the surface of the body;