Psoriasis is a long-term skin condition that causes patches of flaky skin (plaques) with overlying white or silvery scales. Psoriasis can also affect the nails and joints, and can start at any age.

There are several types of psoriasis, but the most common is called chronic plaque psoriasis. Patches can occur anywhere on the body, but are commonly found on the elbows, knees, scalp and lower back. These skin patches can cycle through periods of improving and resolving, before getting worse again. About half of the people with chronic plaque psoriasis will have scalp psoriasis and/or fingernail involvement.

The severity of psoriasis varies significantly between people, froma few small patches to a more widespread rash impacting day-to-day life. Psoriasis is not contagious, and therefore cannot spread between people. For many people certain triggers can make their symptoms worse, causing a “flare-up” of symptoms.

Treatment can include topical creams or foams, oral medications, or biologic medications administered via a shot or, more rarely, an IV infusion.