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Photodermatitis, sometimes referred to as sun poisoning or photoallergy, is a form of allergic contact dermatitis in which the allergen must be activated by light to sensitize the allergic response, and to cause a rash or other systemic effects on subsequent exposure. The second and subsequent exposures produce photoallergic skin conditions ...
Dermatographic urticaria is sometimes called "skin writing", as it is possible to mark deliberate patterns onto the skin. The condition manifests as an allergic-like reaction, causing a warm red wheal to appear on the skin. As it is often the result of scratches, involving contact with other materials, it can be confused with an allergic ...
Hives, also known as urticaria, is a kind of skin rash with red, raised, itchy bumps. [ 1] Hives may burn or sting. [ 2] The patches of rash may appear on different body parts, [ 2] with variable duration from minutes to days, and does not leave any long-lasting skin change. [ 2] Fewer than 5% of cases last for more than six weeks (a condition ...
Perioral Dermatitis. Perioral dermatitis is a red rash that appears around your mouth and nose and causes red, inflamed, swollen bumps on the lower half of your face, says Dr. Parikh. The rash is ...
For instance, if your skin looks dry, use a gentle moisturizer, Hu advises, and if the rash itches, use an over-the-counter cortisone cream for a week. But if the rash isn't getting better after ...
Acne. What it looks like: Acne causes red, discolored bumps on the skin, along with whiteheads, blackheads, and cysts. Other symptoms to note: Acne is the most common skin condition affecting ...
Rash. A rash is a change of the skin that affects its color, appearance, or texture. A rash may be localized in one part of the body, or affect all the skin. Rashes may cause the skin to change color, itch, become warm, bumpy, chapped, dry, cracked or blistered, swell, and may be painful. The causes, and therefore treatments for rashes, vary ...
Symptoms of eczema. The main symptom is itchy skin. Where the itch is located will depend on the individual. Children tend to have eczema on their cheeks, elbows, knees, and scalp.