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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.
Generally, the East Asian, Central Asian and Native American population has straight hair with a very thick cuticle layer [5] and South Asians have thick, wavy or curly hair, [6] while the general hair type seen in black African hair is thick, curly and dense with more hair growing from the head. The curly quality comes from the shape of the ...
Patients who shave the affected area only once will generally experience a recurrence of the infection, since, the bacteria begin to develop the concretions once again as the hair grows back. [ 2 ] Corynebacterium infections are related to excessive sweating ; for this reason, deodorants containing an aluminum chloride solution may be used for ...
Scalp Folliculitis. 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 ...
Hair thinning on the top of the head. A thinner ponytail. Hair loss at your temples. Overall thinning hair. Symptoms of alopecia areata include: Bald spots on your scalp. A strip of hair loss on ...
Pheomelanin colors hair orange and red. Eumelanin, which has two subtypes of black or brown, determines the darkness of the hair color; [4] more black eumelanin leads to blacker hair and more brown eumelanin to browner hair. [6] All human hair has some amount of both pigments. [9] Over 95% of melanin content in black and brown hair is eumelanin ...
Both men and women coated their hair with a strong acid that stripped the outer layer and altered the shape of the hair shaft, causing it to "relax" or straighten, [49] and the longer the chemical was left on the hair, the straighter the hair would become. If left on the hair too long, the relaxer could burn the scalp and cause sores to form.
The disease is primarily caused by dermatophytes in the genera Trichophyton and Microsporum that invade the hair shaft. The clinical presentation is typically single or multiple patches of hair loss, sometimes with a 'black dot' pattern (often with broken-off hairs), that may be accompanied by inflammation, scaling, pustules, and itching.