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Onychomycosis is a fungal infection of the nail bed, nail plate or both. It is most commonly caused by Trichophyton rubrum. It may also be caused by non-dermatophyte molds and yeasts.
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.
Patients with confirmed onychomycosis but are refractory to treatment may benefit from switching to an alternative oral agent.
For further information regarding the management of Tinea Unguium, please refer to Disease Algorithm for the Treatment Guideline.