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Folliculitis is a common skin condition characterized by inflammation of hair follicles. It can manifest as small, red bumps or pus-filled pimples around the base of hairs. The affected areas can be itchy or sore.

The condition is typically caused by a bacterial infection, most commonly Staphylococcus aureus. Other causes include fungal infections, irritation from friction or shaving, and certain medical conditions like acne or weakened immune systems. Risk factors include hot tubs, tight clothing, and excessive sweating.

Folliculitis can occur anywhere on the body where hair grows, but it is often seen on the scalp, face, chest, back, and thighs. It can be superficial, affecting only the upper part of the follicle, or deeper, involving the entire follicle.

Diagnosis is usually made based on the appearance of the rash and a review of the patient's medical history. In some cases, a skin scraping or culture may be performed to identify the specific microorganism causing the infection.

Treatment depends on the severity and cause of the folliculitis. Mild cases may resolve on their own. For bacterial infections, topical or oral antibiotics may be prescribed. Antifungal medications are used for fungal folliculitis. Avoiding irritants like tight clothing and shaving can also help. Maintaining good hygiene is important for prevention.