Psoriasis is a dry, scaly skin condition that affects about 3% of people globally. It has similarities to dandruff in that it's caused by an accelerated shedding of skin cells.
Psoriasis can start at any age, but most often develops in childhood with the mean incidence occurring among people in their 20s.
The main symptom of psoriasis is grey or silvery flaky patches on the skin which are red and inflamed underneath. Commonly affected areas include the scalp, elbows, knees, navel, palms, ears and groin.
Psoriasis has a genetic link and tends to run in families. About 30% of people with a close relative who has psoriasis develop the condition.
It's essential to have the condition properly diagnosed by your GP to help with treatment.
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