Unusual fungal nail infection 2013-03-12T12:08:30Z SNOMEDCT_US:414941008 Unusual tinea unguium Unusual onychomycosis Increased susceptibility to fungal infection of the nail apparatus (onychomycosis), as manifested by recurrent or severe infection of the nail plate, nail bed, or nail matrix caused by fungal organisms. Causative agents include dermatophytes (Trichophyton species) and Candida species. UMLS:C0040261 HP:0012203 Onychomycosis Unusual nail candidiasis Unusual fungal skin infection Unusual nail infection