Psoriasis
Overview
Psoriasis is a skin condition that causes flaky patches of skin which form scales.
Symptoms
Red, flaky, crusty patches of skin with silver scales (elbows/knees/scalp). Itchy/sore.
Causes
People with psoriasis have an increased production of skin cells. Skin cells are normally made and replaced every 3 to 4 weeks, but in psoriasis this process only takes about 3 to 7 days. The resulting build-up of skin cells is what creates the patches associated with psoriasis. Although the process is not fully understood, it's thought to be related to a problem with the immune system. The immune system is your body's defence against disease and infection, but it attacks healthy skin cells by mistake in people with psoriasis. Psoriasis can run in families, although the exact role genetics plays in causing psoriasis is unclear. Many people's psoriasis symptoms start or become worse because of a certain event, known as a trigger. Possible triggers of psoriasis include an injury to your skin, throat infections and using certain medicines. The condition is not contagious, so it cannot be spread from person to person.
Treatment
Topical creams (Vitamin D/Steroids); Phototherapy (UV light); Systemic medication (Methotrexate).
Prevention
Avoid triggers (stress/alcohol); Healthy weight.
When to see a doctor
See GP if: skin patches extensive/painful.