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The position and distribution of hair follicles varies over the body. 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 ...
When you have too much sebum, it can clog hair follicles, potentially leading to scalp folliculitis. Ingrown hairs . Infected ingrown hairs are a type of folliculitis that may be present on the ...
It has been shown that individuals can be uniquely identified by their androgenic hair patterns. For example, even when one's particular distinguishing features such as face and tattoos are obscured, persons can still be identified by their hair on other parts of their body. [26] [27]
Originating from the embryonic epidermis, the hair follicle evolves into one of the most complex structures in the human body, comprising 7–8 distinct tissue sections. [1] The base of the hair follicle contains the bulb, housing dermal fibroblasts known as the dermal papilla, crucial for morphogenesis and the hair follicle's cyclic activity ...
Alopecia Areata. Alopecia areata is an autoimmune condition that affects about 2 percent of the population. It occurs when your immune system attacks your hair follicles. This can damage your ...
"The old hair detaches from the hair follicle, but new hair is not yet actively growing," says Dr. Kinler. Around ten to 15 percent of your follicles are going through this phase.
This insulation regulates body temperature: the vellus hair functions like a wick for sweat. While a skin pore is open, sweat wets a strand of vellus hair. The sweat on the external part of the strand evaporates. More sweat wets the external part of the vellus strand and then evaporates. This process is called perspiration.
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 ...