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Mucormycosis (Black Fungus): Early Warning Signs and Why Timing Matters

A rare but serious infection that mostly affects people with uncontrolled diabetes or weakened immunity. Early recognition saves tissue and lives.

10 July 2026·5 min read·Mucormycosis

Mucormycosis is an uncommon fungal infection that can involve the nose, sinuses and nearby structures. It is seen more often in people with poorly controlled diabetes or weakened immunity.

Early warning signs

One-sided facial pain or swelling, nasal blockage with dark or bloody discharge, black crusting inside the nose, numbness of the face, or changes in vision should prompt an urgent ENT review.

Why early care matters

The infection can spread quickly. Early diagnosis with nasal endoscopy and imaging, control of blood sugar, antifungal medication and timely surgery to remove affected tissue offer the best chance of a good outcome.

Prevention

Keep blood sugar under control, take steroids only as prescribed, and do not ignore persistent nasal or facial symptoms, especially if you have diabetes.

This article is for general education and does not replace a consultation. If you have symptoms, please see a doctor.