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Trichomycosis Axillaris

Superficial bacterial colonization with C.tenuis of hair shafts in axilla; ↑ risk with hyperhidrosis/poor hygiene
Presents with white-yellow, red, or black adherent nodules attached to hair shafts (“frosted” appearance of hairs) with characteristic rancid acidic odor, common in axilla, and rarely affects pubic area
Treatment: shave axillary hair, topical benzoyl peroxide or topical clindamycin