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Many of us have heard the ol’ adage that you shouldn’t pull out a gray hair because it will cause two more to grow in its place. In fact, based on the conviction your moms and aunties seem to ...
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Trichotillomania (TTM), also known as hair-pulling disorder or compulsive hair pulling, is a mental disorder characterized by a long-term urge that results in the pulling out of one's own hair. [2] [4] A brief positive feeling may occur as hair is removed. [5] Efforts to stop pulling hair typically fail.
Grey or white hair is not caused by a true grey or white pigment, but is due to a lack of pigmentation and melanin. The clear hairs appear as grey or white because of the way light is reflected from the hairs. The change in hair colour occurs when melanin ceases to be produced in the hair root and new hairs grow in without pigment.
Here, dermatologists explain why hair turns gray or white, the illnesses that could cause gray hair, and reasons for premature graying.
Goose bumps are created when tiny muscles at the base of each hair, known as arrector pili muscles, contract and pull the hair straight up. The reflex is started by the sympathetic nervous system, which is responsible for many fight-or-flight responses. The muscle cells connected to the hair follicle have been visualized by actin ...
Although people with trichotillomania often feel relief, satisfaction or other positive emotions when they pull out hair, the behavior also comes with feelings of shame and embarrassment ...