Infection	Common causative species	Differential diagnosis
Tinea capitis	Trichophyton tonsurans Microsporum audouinii* Zoophilic Microsporum canis*	Alopecia areata Impetigo Pediculosis Psoriasis Seborrheic dermatitis Traction alopecia Trichotillomania
Tinea corporis	Trichophyton rubrum Epidermophyton floccosum	Cutaneous lupus erythematous Drug eruption Eczema Erythema multiforme Granuloma annulare Nummular eczematous dermatitis Pityriasis rosea Psoriasis Secondary syphilis Tinea (pityriasis) versicolor*
Tinea cruris	T. rubrum E. floccosum Trichophyton mentagrophytes	Candidal intertrigo Contact dermatitis Erythrasma* Psoriasis Seborrhea
Tinea manuum	T. rubrum	Same as with tinea pedis
Tinea pedis	T. rubrum T. mentagrophytes E. floccosum	Bacterial or candidal infection Contact or atopic dermatitis Dyshidrosis Eczema Pitted keratolysis Psoriasis
Tinea unguium	T. rubrum T. mentagrophytes	Contact dermatitis Lichen planus Onychodystrophy Psoriasis