Scalp folliculitis - Definition

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Scalp folliculitis or folliculitis decalvans is damage to the follicles of the scalp. Follicles are small bags from which hair grows. In general, scalp folliculitis is caused by an infection with Staphylococcus aureus and preferentially affects the occipital part of the skull (at the rear) and the vertex (crown). It results in red patches consisting of small pustules which will then evolve into a crust that generates irreversible hair loss. The development of the disease and repeated loss of hair result in the destruction of the follicle and the irreversible loss of certain patches of hair. Folliculitis of the scalp can be treated with antibiotics in hopes of stopping its progression, but relapses are frequent when these drugs are stopped.