What is the most common cause of folliculitis barbae?

Folliculitis barbae is primarily caused by bacterial infection, particularly from Staphylococcus bacteria. This condition occurs when hair follicles become inflamed, leading to red, itchy bumps. The presence of Staphylococcus species, which are commonly found on human skin, is particularly problematic during shaving or hair removal, where microtears can allow the bacteria to enter the hair follicles.

While conditions such as fungal infections or ingrown hairs can lead to similar symptoms, they are not the most prevalent cause of folliculitis barbae. Ingrown hairs, for instance, may result from improper shaving techniques but are not the primary factor. Excessive sweating can contribute to skin irritation and can lead to various dermatoses, but it does not directly cause folliculitis in the same way that bacterial infection does. Therefore, identifying Staphylococcus bacteria as the most common cause allows barbers and practitioners to focus on prevention and treatment strategies effectively.