An underarm infected hair follicle, also known as folliculitis, is a common skin condition caused by a bacterial or fungal infection of one or more hair follicles. It appears as small, red, and painful bumps that may contain pus. Folliculitis can affect people of all ages and skin types.
Underarm infected hair follicles are often caused by shaving, waxing, or other forms of hair removal that can irritate the skin and create an entry point for bacteria. Tight clothing, excessive sweating, and poor hygiene can also contribute to the development of folliculitis.