skin disorders
Descriptions of Skin Marks, Growths, and Color Changes
Color Changes in the Skin
Although certain color changes are typical, the natural color of a person's skin can change the appearance of these colors. (erythema) can result from many different disorders that cause inflammation or are caused by infection. Tumors on the skin are often pink or red, and disorders affecting blood vessels near the skin surface, such as Port-Wine Stains , may appear red. In people who have dark skin, the same conditions that cause redness can be more subtle (with possibly less contrast with surrounding skin) and harder to recognize. Orange skinis most often the result of hypercarotenemia. Hypercarotenemia is a condition that is the result of too much of the pigment carotene in the blood. People who overeat foods rich in beta-carotene, such as carrots, may develop hypercarotenemia. In people who have dark skin, the orange may be more noticeable on the palms and soles. may occur in people who have Jaundice in Adults . In people who have dark skin, the yellow may be more noticeable in the sclera (white part of the eye) than the skin. Causes of isolated yellow areas include Green Nail Syndrome None may be caused by bleeding beneath the skin (cutaneous hemorrhage) or Overview of Vasculitis . Abnormal overgrowths of blood vessels, such as , and silver (argyria), are deposited in the skin. Skin that has a blocked or poor supply may appear purple to gray in color. Some birthmarks and Moles (nevi) that are deep in the skin may appear blue. lesions may contain specialized cells that produce the brown pigment melanin (melanocytes). Examples of these types of lesions include moles (nevi) and Melanoma . Thick, black, crusty scabs (called eschars) are collections of dead skin and can be caused by death of tissue (infarction). 