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As it is often the result of scratches, involving contact with other materials, it can be confused with an allergic reaction, when in fact it is the act of being scratched that causes a wheal to appear. These wheals are a subset of urticaria (hives), and appear within minutes, in some cases accompanied by itching. The first outbreak of ...
Hives, also known as urticaria, is a kind of skin rash with red and/or flesh-colored, 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 do not leave any long-lasting skin change. [2]
Most BCCs appear on areas of the body that receive regular sun exposure (including the arms, head and neck). It isn’t a particularly aggressive form of skin cancer, and it's usually very ...
It may begin with something that rubs, irritates, or scratches the skin, such as clothing. This causes the person to rub or scratch the affected area. Constant scratching causes the skin to thicken. The thickened skin itches, causing more scratching, causing more thickening. Affected area may spread rapidly through the rest of the body.
If the pore closes, it'll appear white and is called a whitehead; if the pore remains open it looks dark and is called a blackhead. First thing's first: Acne as a whole is extremely common.
Alfred Blaschko, a private practice dermatologist from Berlin, first described and drew the patterns of the lines of Blaschko in 1901. He obtained his data by studying over 140 patients with various nevoid and acquired skin diseases and transposed the visible patterns the diseases followed onto dolls and statues, then compiled the patterns onto a composite schematic of the human body.
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Goose bumps can also be a response to anger or fear: the erect hairs make the animal appear larger, in order to intimidate enemies. This can be observed in the intimidation displays of chimpanzees, [ 11 ] some New World monkeys like the cotton-top tamarin , [ 12 ] in stressed mice [ 13 ] and rats, and in frightened cats.