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What it looks like: Poison ivy is a type of allergic contact dermatitis that is caused by the oil (urushiol oil) in the poison ivy plant, explains Karan Lal, D.O., M.S., F.A.A.D., double board ...
Keratosis pilaris causes small harmless bumps that are sometimes referred to as "chicken skin." The bumps may be raised and flesh-colored or red and pimple-like, the AAD explains. And the ...
Hives, or urticaria, is a form of skin rash with red, raised, itchy bumps. [1] They may also burn or sting. [2] Hives can appear anywhere on the surface of the skin. Whether the trigger is allergic or not, a complex release of inflammatory mediators, including histamine from cutaneous mast cells, results in fluid leakage from superficial blood ...
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.
Cholinergic urticaria typically presents with a number of small papular hives all over the body, that involve cutaneous inflammation (wheals) and severe nerve pain, which usually develops in response to exercise, bathing, staying in a heated environment, spicy foods, or emotional stress.
Mosquito bites don't typically cause symptoms beyond the annoying, itchy bumps. A severe allergic reaction may come with a hive-like rash, swelling and inflammation of the bite area and swelling ...
A small proportion of people who are allergic to penicillins also have similar cross sensitivities to other antibiotics such as cephalosporins. If someone has developed side effects when taking penicillin, these side effects may develop with a new medication even though the person has not taken the new medication before.
Want to know what that bump, sore, scabs or red irritation on your scalp means? Here are the most common scalp conditions, with photos and treatments. 7 Common Scalp Issues — And How to Treat Them