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Irritant folliculitis is an inflammation of the hair follicle. [1] It characteristically presents with small red bumps in the skin at sites of occlusion, pressure, friction, or hair removal; typically around the beard area in males, pubic area and lower legs of females, or generally the inner thighs and bottom.
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.
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.
Folliculitis starts with the introduction of a skin pathogen to a hair follicle. Hair follicles can also be damaged by friction from clothing, an insect bite, [2] blockage of the follicle, shaving, or braids that are very tight and close to the scalp. The damaged follicles are then infected by Staphylococcus spp. Folliculitis can affect people ...
A key aspect of hair loss with age is the aging of the hair follicle. [59] Ordinarily, hair follicle renewal is maintained by the stem cells associated with each follicle. Aging of the hair follicle appears to be primed by a sustained cellular response to the DNA damage that accumulates in renewing stem cells during aging. [60]
Hair diseases are illnesses that impact the persistence and regular growth of hair. Types of hair diseases include folliculitis , hirsutism , hypertrichosis , hypotrichosis ( alopecia ), Menkes kinky hair syndrome , monilethrix , and piedra .
Eyebrow plucking. Plucking or tweezing can mean the process of human hair removal, removing animal hair or a bird's feathers by mechanically pulling the item from the owner's body. In humans, hair removal is done for personal grooming purposes, usually with tweezers. An epilator is a motorised hair plucker.
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] A hair follicle consists of : The papilla is a large structure at the base of the hair follicle. [4] The papilla is made up mainly of connective tissue and a capillary ...