tinea%20unguium
TINEA UNGUIUM
Onychomycosis is a fungal infection of the nail bed, nail plate or both. It is caused by dermatophytes, non-dermatophyte molds and yeast.
Tinea unguium or dermatophytic onychomycosis is a dermatophyte infection of the nail more commonly affecting the toenails than the fingernails.
It is usually asymptomatic and patients first consult for cosmetic reasons.
It is suspected if there are changes in the 3rd or 5th toenail, involvement of the 1st and 5th toenails on the same foot and unilateral nail changes.

Differential Diagnosis

  • Dermatologic disorders: Lichen planus, psoriasis, nail dystrophy, eczematous conditions
  • Other nail infections: chronic paronychia, viral warts
  • Trauma
  • Senile ischemia
  • Malignancy: Fibroma, melanoma, Bowen disease
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