Athlete's Foot - Diagnosis

Patients may be tempted to treat their rash with nonprescription drugs. However, if the condition is not properly diagnosed, such drugs could make the rash worse. It is better to see a doctor about the rash. A dermatologist (skin specialist) can diagnosis athlete's foot by conducting a physical examination and studying skin scrapings from the foot under a microscope. When treated with potassium hydroxide, the scrapings show the presence of fungi.