Some demonstrate coppery-orange fluoresence under Woods Lamp
KOH wet prep (Spaghetti and Meatballs appearance)
Almost never cultured given difficult culture medium, benign course, and diagnostic KOH prep.
Tinea versicolor
Postinflammatory hyperpigmentation 
Tinea corporis
Melasma
Onychomycosis
Solar lentigines
Candida dermatitis
Ephelides 