A girl with acneAcne is a common skin condition that affects most people, usually when they are teenagers or young adults. It is commonly brought on by the changes in hormone levels during puberty. Acne occurs when hair follicles are clogged with dead skin cells and oil from the skin. This results in spots and oily skin, mostly on the face, but they can also appear on the back and chest. Spots that occur with acne include blackheads (small bumps that are black because the inner lining of the hair follicle has a dark colouring), papules (small red bumps that may feel tender) and pustules (similar to papules, but with a white tip in the centre, caused by a build-up of pus). Although acne cannot be cured, it can be controlled by treating spots with creams, lotions and gels—although these may take some time to work.
During a skin prick test, a person is tested for allergic reactions to different substances. The skin is pricked with a tiny...Read More >>During a skin prick test, a person is tested for allergic reactions to different substances. The skin is pricked with a tiny amount of suspected allergens. If there is a reaction, the skin around the prick becomes itchy, red and swollen.
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