Localized Eczema: What Cause?

What strategy will you choose to help cure this woman’s local rash?

Eczema is confined to the dorsum of a 37-year-old woman's hands. She had been applying an over-the-counter, topical antifungal cream but noted no change in the rash. The patient is a hairdresser and enjoys kickboxing.

What is the recommended course of action?