Ailment of advancing scale
Looking at the edge of the rash it is apparent that it is slowly ascending towards the dorsum of the foot, demonstrating the typical advancing scaly edge of a dermatophyte infection. It is from this edge that scrapings for KOH testing and culture should be taken.
There is little inflammation associated with this fungus because it is likely to have been acquired from another human being rather than the ground or an animal. This type of tinea pedis usually requires oral therapy to cure it, particularly griseofulvin or terbinafine, for a couple of months. It is