Author: Dr. Jane M. Ellis, MD (Dermatology)
Reviewed by: Dr. Aaron Patel, MD (Infectious Diseases)
Published: 2017-01-05 Last reviewed: 2026-10-18
Quick facts
- Athlete’s foot (tinea pedis) is a common contagious fungal infection of the feet.
- Typical symptoms: itching, burning, peeling skin, and sometimes blisters.
- Most cases respond to topical antifungal creams used for 1–4 weeks; more severe cases may need prescription treatment.
What is athlete’s foot (tinea pedis)?
Athlete’s foot, medically called tinea pedis, is a fungal infection of the skin on the feet caused by dermatophyte fungi. It thrives in warm, moist environments such as sweaty socks, closed shoes, locker rooms and public showers. This article explains causes, symptoms, evidence-based treatments and practical tips on how to prevent athlete’s foot.
Signs and symptoms of athlete’s foot
- Itching, especially between toes (interdigital).
- Peeling, cracking, or scaling skin; whitened, macerated skin in skin folds.
- Small blisters or pustules on the sole or sides of the foot.
- Burning sensation or persistent foot odor.
Causes and risk factors
Dermatophyte fungi (Trichophyton species are common) infect the dead outer layer of skin. Key risk factors include:
- Moist, occluded footwear and sweaty feet.
- Walking barefoot in communal areas (locker rooms, pool decks, public showers).
- Sharing towels or footwear with an infected person.
- Reduced immunity, diabetes, or poor circulation.
How athlete’s foot is diagnosed
Diagnosis is usually clinical (based on appearance and symptoms). Tests used when diagnosis is unclear or infection is resistant include:
- KOH (potassium hydroxide) scraping to look for fungal elements under a microscope.
- Fungal culture or PCR for species identification in persistent cases.
- Consider other causes such as eczema, contact dermatitis, psoriasis, or bacterial cellulitis when findings are atypical.
Treatment options
Treatment depends on severity and location. Follow product instructions and continue therapy for the full recommended duration even after symptoms improve.
Over-the-counter antifungal treatments
- Common OTC topical antifungals: terbinafine 1% (usually once daily) and clotrimazole 1% (typically twice daily).
- Typical duration: 1–4 weeks for terbinafine; clotrimazole may require 2–4 weeks; follow the specific product label.
- Use antifungal powder or spray to keep shoes and toes dry.
Prescription medications and when they’re needed
- Oral antifungals (terbinafine or itraconazole) are used for widespread, chronic, nail-associated, or treatment-resistant infections—prescribed by a clinician after evaluation.
- See a doctor if OTC treatment fails after a full course, if the infection is severe, or if you have diabetes or a weakened immune system.
Home remedies and supportive care
Some home remedies have limited or anecdotal support. If you try them, follow safety precautions and stop if irritation occurs.
- Apple cider vinegar soaks (1:1 dilution with water): anecdotal evidence; avoid on cracked or bleeding skin. Patch-test first.
- Baking soda soaks: anecdotal for odor control and moisture reduction; pat feet dry afterward.
- Tea Tree Oil: limited clinical evidence. Tea Tree Oil can be potent—dilute (for example, a few drops in a carrier oil) and patch-test. See the guide on Tea Tree Oil for dilution and safety details.
- Neem oil: reported antifungal properties; mix with carrier oil and patch-test. See the Neem oil article for precautions.
- Garlic and other botanicals: anecdotal; may irritate skin. Read about garlic uses before applying concentrated preparations.
- Avoid applying harsh solvents (undiluted rubbing alcohol, DMSO) to broken or inflamed skin—these can worsen irritation or increase absorption of other substances.
Prevention tips: how to avoid athlete’s foot
- Keep feet clean and dry: dry thoroughly between toes after bathing.
- Wear breathable shoes and moisture-wicking socks; change socks daily or when damp.
- Use antifungal powder or baking soda in shoes to reduce moisture.
- Avoid walking barefoot in communal wet areas; wear flip-flops or shower shoes.
- Rotate shoes to allow them to fully air out before wearing again.
- Do not share towels, shoes, or socks.
- Treat infected household members and disinfect floors or mats if needed.
Complications and when to see a doctor
- See a clinician if the rash spreads rapidly, becomes painful, shows pus, or is accompanied by fever.
- People with diabetes, poor circulation, or immune suppression should seek early medical care for any foot infection.
- Persistent or recurrent infections may require prescription oral antifungals or specialist referral.
Athlete’s foot vs. other foot conditions
- Eczema/contact dermatitis: often associated with a history of allergies and can be itchy with different distribution.
- Palmoplantar psoriasis: thicker scaling plaques, sometimes with nail changes.
- Bacterial cellulitis: usually red, hot, swollen and painful—may require antibiotics.
Frequently asked questions
- Is athlete’s foot contagious? Yes—direct contact with infected skin or contaminated surfaces can spread the fungus.
- Can it come back? Yes. Recurrent infections are common without preventive measures.
- Can pets transmit it? Uncommon for tinea pedis; pets can carry other dermatophytes—seek veterinary advice if pet has lesions.
References and further reading
Sources used to prepare this article include guidance from the Centers for Disease Control and Prevention (CDC), the American Academy of Dermatology (AAD), the National Health Service (NHS, UK), and relevant Cochrane reviews on topical antifungals.
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