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The hair follicle is an organ found in mammalian skin. [1] It resides in the dermal layer of the skin and is made up of 20 different cell types, each with distinct functions.. The hair follicle regulates hair growth via a complex interaction between hormones, neuropeptides, and immune cells
8 Autoimmune Diseases That Cause Hair Loss. This article was reviewed by Knox Beasley, MD.. You might associate autoimmune conditions with symptoms like skin disease, chronic pain, and fatigue.
After the telogen phase, the hair follicle re-enters the anagen phase, hence why it's called a cycle. ... As Dr. Kinler notes, hair loss becomes a bigger concern "when there is an imbalance in the ...
Frictional alopecia is the loss of hair that is caused by rubbing of the hair, follicles, or skin around the follicle. [1] The most typical example of this is the loss of ankle hair among people who wear socks constantly for years. [2] The hair may not grow back even years after the source of friction has ended.
In alopecia areata, a hair follicle is attacked by the immune system. T-cells swarm the roots, killing the follicle. This causes the hair to fall out and parts of the head to become bald. Alopecia areata is thought to be a systemic autoimmune disorder in which the body attacks its own anagen hair follicles and suppresses or stops hair growth. [22]
Scalp folliculitis is a skin condition that occurs when the hair follicles on the scalp become inflamed. This results in pustules, whiteheads, or other pimple-like bumps on the scalp that can be ...