Psoriasis

Psoriasis is chronic skin condition in which the body’s immune system mistakenly sends signals to your skin to keep making extra skin cells. This overproduction of skin cells leads to the thick, scaly red spots, or plaques, on the skin. Common areas for psoriasis plaques on the skin include the scalp, elbows, and the knees.

Psoriasis is different for each person. Sometimes it develops slowly and only in certain body areas. For others, psoriasis happens rather quickly and spreads to multiple body locations seemingly at once.