What does it look like?
There are five major types of psoriasis, each with its own characteristic skin lesions:
- Plaque psoriasis It is the most common form of psoriasis, affecting around 85% of psoriasis sufferers. It usually appears as patches of dry, raised, red skin covered with flaky silvery or white scales. These patches of skin, which are often itchy and painful, are known as plaques or lesions. Psoriasis most commonly appears on the knees, elbows, scalp, trunk, and nails, but it may develop anywhere on the surface of the skin.

- Inverse psoriasis - smooth red lesions in the folds of the skin
- Guttate psoriasis the second most common type - small skin lesions that look like drops of fluid
- Palmar psoriasis - red, scaly, cracked skin on the palms of the hands with tiny pustules. If this occurs on the feet it is known as plantar psoriasis.
- Erythrodermic - psoriasis the most serious (and rare) form reddening and swelling of large areas of the skin
These lesions typically develop on the scalp, knees, elbows and upper body but they can develop on finger and toenails, causing the nails to become thick, pitted and discoloured and possibly separate from underlying skin.
Last Updated 24-03-2009
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