All A to Z Topics


Psoriasis is a skin condition that causes red, flaky, crusty patches of skin covered with silvery scales.
Symptoms of psoriasis
Most cases of psoriasis go through cycles, causing problems for a few weeks or months before easing or stopping.
Causes of psoriasis
Psoriasis occurs when skin cells are replaced more quickly than usual. It is not known exactly why this happens.
Diagnosing psoriasis
Usually, your doctor will make a diagnosis of psoriasis based on the appearance of your skin. There is no blood test for psoriasis.
Treating psoriasis
There is no cure for psoriasis, but treatment will usually help keep the condition under control.
Living with psoriasis
Although psoriasis is just a minor irritation for some people, the condition can sometimes have a significant impact on your life.
‘The ointments made me smell like a newly paved road’
Ray, 69, has been chairman of The Psoriasis Association for the last 33 years. He's lived with psoriasis since he was 14 and continues to treat it with coal-tar medication.
See what the doctor sees with Map of Medicine
See what your doctor sees, find out what is happening with your Psoriasis treatment and what the next steps might be.