Letter B
Black fungus (mucormycosis)
Also known as: Mucormycosis, Zygomycosis
Black fungus (mucormycosis) symptom guide: what it can mean, possible causes, and when to seek care. Educational only.
Overview
Black fungus (mucormycosis) is a serious infection seen more often in people with weakened immunity or poorly controlled diabetes. Symptoms may include facial pain, nasal congestion, or skin changes. This is not something to self-diagnose—hospital assessment is essential.
Possible causes
- Poorly controlled diabetes
- Weakened immunity after severe illness
- Immune-suppressing medicines
- Certain injuries or surgery
- Rare environmental mold exposure
When to see a doctor
Seek emergency care right away for facial pain, eye swelling, darkening skin changes, or breathing trouble with fever.