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The underlying skin is unscarred and looks superficially normal. Although these patches can take many shapes, they are usually round or oval. [19] Alopecia areata most often affects the scalp and beard, but may occur on any part of the body with hair. [20] Different areas of the skin may exhibit hair loss and regrowth at the same time.
Poliosis circumscripta, commonly referred to as a "white forelock", is a condition characterized by localized patches of white hair due to a reduction or absence of melanin in hair follicles. Although traditionally associated with the scalp, poliosis can affect any hairy area on the body, including eyebrows, eyelashes, and beards.
3. Diet. You are what you eat — and what you eat (or don’t eat) can affect your hair health. Certain diets, particularly those that lead to deficiencies in minerals and vitamins such as ...
When goose bumps are observed, small muscles (arrector pili muscle) contract to raise the hairs either to provide insulation, by reducing cooling of the skin by air convection, or in response to central nervous stimulus, similar to the feeling of "hairs standing up on the back of your neck". This phenomenon also occurs when static charge is ...
Hairstyles that put pressure on your hair, like dreadlocks or braids, can damage the hair follicles and cause traction alopecia, a type of hair loss most common in people with tight, spiraling ...
️ Biotin (Vitamin B7): This is a water-soluble vitamin that helps with the production of keratin, which is a protein that makes up your hair, skin, and nails. “While it primarily helps with ...
The Fischer–Saller scale, named after Eugen Fischer and Karl Saller is used in physical anthropology and medicine to determine the shades of hair color. The scale uses the following designations: A (very light blond), B to E (light blond), F to L (), M to O (dark blond), P to T (light brown to brown), U to Y (dark brown to black) and Roman numerals I to IV and V to VI (red-blond).
For example, the skin of the palms and soles does not have hair follicles whereas skin of the scalp, forearms, legs and genitalia has abundant hair follicles. [1] There are many structures that make up the hair follicle. Anatomically, the triad of hair follicle, sebaceous gland and arrector pili muscle make up the pilosebaceous unit. [1]