Onychomycosis

Fungal infection of fingernails/toenails

Caused mostly by dermatophytes but also yeasts and nondermatophyte molds

Toenails are more commonly affected than fingernails.

Synonym: tinea un...

Dermatophytes: commonly preceded by dermatophyte infection at another site; 80% involve toenails, especially h...

Avoid factors that promote fungal growth (i.e., heat, moisture, occlusion, tight-fitting shoes).

Treat underlying disease risk factors.

Treat secondary infections.

Topical agents: Slow response is expected; visits ev...

B35.1 Tinea unguium

B37.2 Candidiasis of skin and nail

414941008 onychomycosis (disorder)

403059006 Onychomycosis of toenails (disorder)

403058003 Onychomycosis of fingernails (disorder)

2...

Psoriasis and chronic nail trauma are commonly mistaken for fungal infection.

Diagnosis should be based on both clinical and mycologic laboratory evidence.

Oral medication is much more e...