L40: Psoriasis

L40.8: Other psoriasis

Your body’s own immune system plays a role in the development of psoriasis. The condition can be hereditary. Other family members may then be affected, too. Triggers such as skin irritations, stress or certain medications can make the condition worse.

Psoriasis typically results in skin changes. Excessive amounts of new skin cells are formed in the changed areas. The skin also becomes inflamed. The areas affected then become red and are very scaly. The nails may also change and the joints become inflamed.