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Living with Mycetoma

A long-lasting infection caused by fungi or bacteria that leads to swelling, hardening, and draining sores, often in the foot.

Understanding Mycetoma

Mycetoma is a long-lasting infection caused by fungi or by filament-forming bacteria (actinomycetes).

Over time, the affected area swells a lot and hardens. The skin can break open, and tunnels (sinus tracts) drain pus and grains filled with the organisms. Some people have no discomfort, while others have itching or pain. It is rare in the United States but common in Africa, Mexico, and India, especially among farmers, shepherds, and people in rural areas. Wounds from thorns or splinters are a risk factor.

Signs & symptoms

Symptoms vary from person to person. GARD lists these among the most common:

  • Firm lumps under the skin
  • Swelling and stiff, hard skin
  • Draining sores with pus and grains
  • Changes in bone structure
  • Foot shape changes
  • Repeated skin infections

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Your doctor may refer you to a specialist who knows rare conditions.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

Care & treatment

Care team
A doctor familiar with rare conditions, plus specialists as needed
Expert care
Ask about multidisciplinary care centers for rare conditions
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with rare disease patient organizations for support
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
Which type of organism is causing my infection?
Which tests can show how deep the infection goes?
Which specialists should be on my care team?

Quick facts

Symptoms usually startany time in life

Mycetoma is caused by fungi or actinomycetes. Frequent penetrating wounds from thorns or splinters are a risk factor.

Infectious

Also known as: madura foot; mycetomata

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · MycetomaGARD ID 3862 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Mycetoma.

Explore the Mycetoma blog

Explore research for Mycetoma

Explore actively recruiting Mycetoma studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Mycetoma with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
  • Share your city to look for research near you
  • Eligibility is confirmed by the study team

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I can help you find recruiting Mycetoma studies. Enter a ZIP code, address or city below and I'll look within 50 miles.

Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

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