Superficial bacterial folliculitis

**Definition:** Bacterial infection of the follicular ostium manifested as follicular papules and pustules with perifollicular erythema. The most commonly isolated organisms are coagulase-negative staphylococci and Staphylococcus aureus. The infection may be acute but is more commonly subacute or chronic; individual lesions heal without scarring. Commonly affected sites include the scalp, beard area, thighs and buttocks.