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    GlossaryGram-negative folliculitis

    bacterial infection of hair follicles resistant to certain antibiotics

    Gram-negative folliculitis is a bacterial infection of the hair follicles caused by Gram-negative bacteria, which are a group of bacteria that do not retain the crystal violet stain used in the Gram staining method of bacterial differentiation. This condition often occurs as a complication in individuals who have been on long-term antibiotic therapy for acne, leading to an overgrowth of these resistant bacteria. Symptoms include pustules and inflammation around hair follicles, typically on the face and neck.

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