Superficial mycotic infections of the skin, hair, or nails are recurring pr
esentations in the geriatric primary care setting. The most common infectio
ns are those caused by dermatophytes. The genus Trichophyton gives rise to
most of the tinea dermatophytoses, including tinea capitis, tinea pedis, an
d tinea unguium (onychomycosis). Part of the diagnostic challenge lies in d
istinguishing the mycotic lesions from those caused by cutaneous diseases s
uch as psoriasis, eczema, dyshidrosis, and contact dermatitis. Because envi
ronmental conditions play a major role in fungal infection onset, clinical
management should include patient education about conditions conducive to f
ungal propagation. Oral agents are the primary mode of treatment for fungal
infections of the scalp and nails, whereas topical treatments are frontlin
e agents for other superficial skin conditions.