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Pilonidal disease is a type of skin infection which typically occurs as a cyst between the cheeks of the buttocks and often at the upper end. [1] [3] Symptoms may include pain, swelling, and redness. [1]
Ingrown hair is a condition where a hair curls back or grows sideways into the skin.The condition is most prevalent among people who have coarse or curly hair. It may or may not be accompanied by an infection of the hair follicle (folliculitis) or "razor bumps" (pseudofolliculitis barbae), which vary in size.
Several hairs arise from the same hair follicle. Scarring and permanent hair loss may follow. The cause is unknown. Folliculitis keloidalis scarring on the nape of the neck is most common among males with curly hair. Oil folliculitis is inflammation of hair follicles due to exposure to various oils, and typically occurs on forearms or thighs.
Ingrown hairs. Infected ingrown hairs are a type of folliculitis that may be present on the scalp or other commonly shaved areas. ... Folliculitis is generally not harmful if treated, so it's ...
A boil, also called a furuncle, is a deep folliculitis, which is an infection of the hair follicle. It is most commonly caused by infection by the bacterium Staphylococcus aureus, resulting in a painful swollen area on the skin caused by an accumulation of pus and dead tissue. [1] Boils are therefore basically pus-filled nodules. [2]
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A cyst is related to an abscess, but it contains a material other than pus, and a cyst has a clearly defined wall. Abscesses can also form internally on internal organs and after surgery. They are usually caused by a bacterial infection. [10] Often many different types of bacteria are involved in a single infection. [8]
Infected hairs become brittle, and after three weeks, the clinical presentation of broken hairs is evident. [4] There are three types of infection: Ectothrix: Characterized by the growth of fungal spores (arthroconidia) on the exterior of the hair shaft. Infected hairs usually fluoresce greenish-yellow under a Wood's lamp (blacklight).