Psoriasis is long lasting, noncontagious, autoimmune disease characterized by raised areas of abnormal skin. It typically presents as red patches with white scales on top. Areas of the body most commonly affected are the back of the forearms, shins, navel area & scalp.
Acne occurs when dead skin cells & oil from the skin clog hair follicles. It features condition like blackheads, whiteheads, oily skin, pimples, & scarring. It mostly effects affects the skin with relatively high number of oil glands including the face, chest, back.
Corns are cone shaped & often painful inwardly directed callus of dead skin that forms at a pressure point near a bone or on a weight bearing part of body. They are mostly on 2 sites of the body either on the feet (sole, toes, heel) or on a palm of hand. When they are present on feet, they can be very painful as to interfere with walking.