As noted by Szepietowski et al1 in their article in this issue of the ARCHIVES, onychomycosis is the most common nail disorder seen in the dermatologist's office, making up about half of all nail complaints. Szepietowski et al present data obtained by survey from 241 dermatologists examining 2761 patients with confirmed onychomycosis. These patients were examined for coexistence of other dermatomycoses and evaluated to determine risk factors for fungal infection of the toenail and other anatomic sites. In these days when evidence-based opinions and results are needed, especially concerning toenail disorders, this article is greatly appreciated.