What are the physical findings characteristic of folliculitis with a noninfectious etiology?

Updated: Oct 08, 2020
  • Author: Elizabeth K Satter, MD, MPH; Chief Editor: Dirk M Elston, MD  more...
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Answer

Folliculitis can also have a noninfectious etiology caused by follicular trauma or occlusion or may be idiopathic. For example, pseudofolliculitis barbae, also known as shaving or razor bumps, occurs primarily in the bearded area of African American males or other racial groups with thick, coarse, curly hair. [29] This condition is not a folliculitis per se, but rather a perifolliculitis that arises as a result of the hair reentering the skin adjacent to its exit point from the follicle. The hair then acts as a foreign body and incites inflammation. The inflammation can spontaneously resolve if the hair is extracted or it can become associated with a chronic foreign body granulomatous reaction and may result in scarring.


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