Psoriasis is a skin condition in which skin cells grow at an abnormal level. Usually, cell regeneration occurs and balances out with the dead skin cells. As skin cells begin to grow abnormally, they rise to the top of your skin and die, leaving behind a red plaque covered with white scales.
They usually occur on the knees, elbows and sometimes on your scalp. There are many reasons why skin cells behave abnormally. The usual reason is that they are linked to the way your immune system is performing.
The disease is characterized by: growing 10 times faster than the normal growth of skin cells. As the dead underlying cells reach the surface of the skin, their massive accumulation causes raised, red plaques that are covered with white scales. This disease usually occurs on the elbows, knees and scalp.
Psoriasis can also affect the palms, torso, and soles of the feet. Psoriasis can sometimes be found associated with psoriatic arthritis, which causes inflammation and pain in the joints. It is estimated that 10 to 30 percent of people with psoriasis in India also suffer from psoriatic arthritis.