What causes psoriasis?
Normal skin takes about a month to grow new skin and then shed it. In psoriasis patients. skin grows in three or four days because the immune system causes rapid skin cell growth. But, instead of the skin shedding, cells pile up on the skin’s surface. They form plaque, scale, and red patches that can be very itchy, and burn or sting. Why the immune system doesn’t function normally is unknown. It’s thought that a combination of genetics and factors in the environment cause psoriasis. It’s possible to develop psoriasis with no family history of the disease.
Psoriasis flares (when the symptoms return) can be triggered by environmental factors that, in turn, cause a change in the immune system. Although the triggers vary from person to person, the most common triggers are:
It’s very helpful to keep a list of when your symptoms flare and what triggers may have caused it. This helps you and your doctor determine your personal triggers so you can avoid them.
Who’s at risk for psoriasis?
You have a higher risk of developing psoriasis if you have: