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Tests and diagnosis
By Mayo Clinic staffYour doctor will want to determine if your signs and symptoms are caused by athlete's foot or by another skin disorder, such as dermatitis or psoriasis. You'll probably be asked about exposure to contaminated areas or contact with people who have athlete's foot.
Your doctor may take skin scrapings or fluid samples from your foot to view under a microscope to identify a fungus. If the sample shows a fungus, an antifungal medication is the usual treatment. If the test is negative but your doctor still suspects that you have athlete's foot, a sample may be sent to a laboratory to determine whether it will grow fungus under the right conditions. This test is known as a culture. Your doctor may also order a culture if your condition doesn't respond to treatment.
- Goldstein AO, et al. Dermatophyte (tinea) infections. http://www.uptodate.com/home/index.html. Accessed Sept. 22, 2008.
- Habif TP. Superficial fungal infections. In: Clinical Dermatology: A Color Guide to Diagnosis and Therapy. 4th ed. Philadelphia, Pa.: Mosby Inc.; 2004. http://www.mdconsult.com/das/book/body/104355536-2/742469442/1195/81.html?printing=true. Accessed Sept. 22, 2008.
- Drugs@FDA. Food and Drug Administration. http://www.accessdata.fda.gov/scripts/cder/drugsatfda/index.cfm. Accessed Sept. 22, 2008.
- Andrews MD, et al. Common tinea infections in children. American Family Physician. 2008;77(10):1415-1420.
- Gibson LE (expert opinion). Mayo Clinic Rochester, Minn. Oct. 16, 2008.
