Onychomycosis is a common fungal infection of the nails, typically caused by the dermatophyte Trichophyton rubrum. The condition is often preceded by a fungal infection of the skin of the foot called tinea pedis. Onychomycosis causes the affected nail to thicken and typically develop a yellow discoloration. Oral antifungals are the most effective treatment for onychomycosis, which should be commenced after confirming the diagnosis via PAS staining and ensuring the patient has good liver function. Topical treatment is available in the form of ciclopirox or efinaconazole lacquers, which are safer yet less effective than oral antifungals.
KeywordsOnychomycosis Dermatophytosis Dermatophyte Fungus Fungal infection Toenail Trichophyton rubrum Candida albicans Tinea pedis Yellow nail PAS stain Onycholysis Nail culture Jublia Ciclopirox Penlac Terbinafine Antifungal
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