Athlete’s Foot: Causes, Symptoms, and Diagnosis – When to See a Primary Care Doctor
Athlete’s foot, medically known as tinea pedis, is a common fungal infection that affects the skin on the feet. It is caused by dermatophyte fungi, which thrive in warm, moist environments such as locker rooms, swimming pools, and tight-fitting shoes. If left untreated, athlete’s foot can spread to other parts of the body, leading to discomfort and complications.
Causes of Athlete’s Foot
Athlete’s foot is primarily caused by fungal growth on the skin due to excessive moisture and warmth. The following factors increase the risk of infection:
- Walking barefoot in public areas like gyms and pools
- Wearing damp socks or tight, non-breathable shoes
- Sharing personal items such as towels, socks, or shoes
- Having a weakened immune system or preexisting skin conditions
Symptoms of Athlete’s Foot
The symptoms of athlete’s foot vary depending on the severity of the infection. Common signs include:
- Itching, burning, and stinging sensations between the toes or on the soles of the feet
- Red, scaly, and peeling skin
- Blisters or ulcers that may ooze or crust over
- Thickened, brittle, or discolored toenails if the infection spreads
Diagnosis of Athlete’s Foot
A primary care doctor or an internal medicine specialist can diagnose athlete’s foot through a physical examination. In some cases, additional tests may be needed, including:
- Skin scraping: A sample of the affected skin is examined under a microscope to detect fungal elements.
- KOH test: A potassium hydroxide (KOH) preparation helps identify the presence of fungi.
- Fungal culture: A laboratory test that identifies the specific fungus causing the infection.
When to See a Primary Care Doctor
While mild cases of athlete’s foot may resolve with over-the-counter antifungal treatments, you should consult a primary care physician if:
- Symptoms persist despite home treatment
- The infection spreads to other parts of the body, such as the hands or groin
- You have diabetes or a weakened immune system, which can increase complications
- You experience severe pain, swelling, or signs of a secondary bacterial infection
Internal Medicine Doctor and Fungus Infections
For recurrent or severe fungal infections, an internal medicine doctor can provide specialized care. These physicians can prescribe stronger antifungal medications, including oral treatments such as terbinafine or fluconazole. They also assess underlying health conditions that may contribute to persistent infections.
Finding the Best Primary Care Physician for Fungal Infections
Selecting the right primary care physician is essential for effective treatment and overall foot health. Consider the following factors:
- Experience in dermatological conditions: A doctor with experience in treating skin infections can provide accurate diagnoses and treatment plans.
- Accessibility and availability: Choose a physician who is easily accessible and available for follow-up visits if needed.
- Patient reviews and recommendations: Check online reviews or ask for recommendations to find a trusted doctor.
- Insurance coverage: Ensure that the doctor accepts your health insurance plan for affordable treatment.
Conclusion
Athlete’s foot is a common but treatable fungal infection. Recognizing the symptoms early and seeking timely medical attention can prevent complications. A primary care doctor or internal medicine specialist can provide the right diagnosis and treatment, ensuring your feet remain healthy and infection-free. If you suspect you have athlete’s foot, don’t hesitate to reach out to a trusted physician for professional care.
Reviewed by Amanda Modesta-Keyhani, M.D., Board Certified in Internal Medicine, Licensed in Arizona on Feb 7, 2025
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