Psoriasis is a very common skin problem, which forms as a thick dead skin over the surface of the skin. Psoriasis can easily be noticed from the inflammation of the skin, red patches and white scales appearing anywhere on the body except the face. Pitting and thickening of finger and toenails is also seen as a symptom.
It can happen or is after effect of other disorders like stress, illness, sunburn, and viral or bacterial infection, or may be from overdose of drugs or alcohol. It takes lot time to heal up and is very painful too.
As we know the skin cells grow fast, so as this, diseased also grows very fast and form raised patches. It is a contagious and very common among people with fair skin. Occurrence of this disease is caused by immune system and not only that it can affect other parts of the body. However, it is not so fatal and can be cured with right treatment.