Black fungus is a rare but serious infection caused by a group of molds that you can usually find inside soil, plants, and rotting foods. If a healthy person brushes against these molds, it mostly does nothing at all, however, for a small group of people with weak immune systems, this same mold can become harmful.
Fear around the fungus grew during the COVID-19 pandemic, when hospitals in some countries suddenly started flooding with black fungus cases. The news reports barely explained: Who is most at risk? How does it spread? And should you worry about it?
In this blog, we’ll answer the top questions people have and see whether black fungus is harmful or not. The sections below cover what the infection is, how dangerous it really is, and what the early signs to watch for are.
What is Black Fungus, Really?
Black fungus is the common name for mucormycosis, an infection caused by molds known as mucormycetes. You can find these molds everywhere, from the soil to dead leaves, in compost heaps, and even the black spots that appear on spoiled bread or fruits. Most people breathe in tiny mold spores every day but never notice, because a healthy body clears them out easily.
The word “black” comes from what the fungal infection does to living tissue. As the mold spreads, it blocks blood flow, and the starved tissue dies and turns dark. In advanced cases, it shows up as dead skin, black crusts inside the nose, or a blackened patch on the face. The mold itself is not truly black; the color comes from the damage it creates to the cells.
How To Identify Black Fungus?
Many people get confused with the name, because a lot of fungi and molds are referred to as black fungus.
The first one is a type of edible mushroom, often called wood ear. It is also sold as black fungus and used in soups and stir-fries. This fungus is safe for most people to eat and has nothing to do with the infection we are talking about here.
The second one is black mold, which you can find in damp houses. It is mostly linked to allergies and breathing problems rather than this harmful disease. The rest of this article is only about mucormycosis, also referred to as black fungus.
So is Black Fungus Dangerous To Humans?
Yes, black fungus can be very dangerous, but the risk is not spread evenly across people. For someone healthy, the odds of getting sick from these molds are very low. For someone whose immune system is weak, the infection can move quickly through the sinuses, lungs, or skin and reach the brain or the blood.
The disease becomes serious once it becomes stronger. Studies by the United States Centers for Disease Control and Prevention report that nearly half of all reported cases die even with treatment. The sooner the black fungus infection is caught and treated, the better the chance of survival. If there are delays, the mold can reach hard-to-treat areas.
So the honest answer is that black fungus is harmful and a real danger to a specific group of people and poses little to no threat to healthy ones.
How Does a Person Catch Black Fungus?
A person can catch black fungus from the following sources:
- Breathing in spores is the most common route, which is why the sinuses and lungs are often the first areas to get affected.
- Spores can settle into a cut, scrape, burn, or surgical wound on the skin.
- In some rare cases, swallowing contaminated food can cause the mold to reach the gut.
Black fungus is a non-communicable disease and cannot pass from one person to another, so you cannot catch it from a cough, a handshake, or sharing a room with a patient.
Who is Most at Risk of Getting Black Fungus?
Black fungus targets people whose defenses are already down. A strong immune system treats the mold as a minor nuisance and clears it. People at risk of getting it include:
Health Conditions
Uncontrolled diabetes is one of the strongest indicators of a weak immune system, as this causes the blood sugar to run very high and the blood to turn acidic. Other conditions like cancer, organ or stem cell transplants, and HIV/AIDS also lower the body’s fighting response. This can make them at risk of catching the disease.
If someone has too much iron in the body, this too can put them at risk, as the fungus can feed on the iron and grow.
Medicines and Injuries That Open the Door
Long-term use of steroids, which are taken to calm the immune system, can raise the risk. Medicines given after a transplant to stop the body from rejecting a new organ can also pose a risk.
If someone has burns, deep wounds, and other skin damage, this can give the mold an open entry into the body. This is often how a case of black fungus on skin begins. The common cause across every group is a body that cannot fight back due to a compromised or weakened immune response.
What Are the Warning Signs of Black Fungus?
The symptoms of black fungus depend on where the mold settles inside the body. If you see any of the following signs, it is advised to get a checkup done to rule out anything serious.
Signs in the Face, Nose, and Eyes
The most common signs start from the sinus and move towards the eye and the brain. Some warning signs include swelling on one side of the face, a blocked or bleeding nose, black crusts inside the nose, headache, fever, and pain around the cheeks or eyes.
If you suddenly experience blurred vision, a drooping eyelid, or one bulging eye, it can point to a spreading black fungus infection.
Signs in the Lungs
If the mold targets the lungs, the illness can look like a stubborn chest infection. The person can also experience fever, cough, chest pain, and trouble breathing. These signs are easy to blame on pneumonia or another common health condition, but it is important to take them seriously and consult a doctor.
Signs of Black Fungus on Skin
A skin infection from black fungus can happen due to a wound or burn. The area may turn red, swollen, warm, and tender, then form a blister or an ulcer with a black center as the tissue dies.
Skin cases are often less deadly than the sinus or lung cases, if treated early. Across every form, if you see fast-changing symptoms in a person with a weak immune system, it is a signal to act rather than wait.
Why Did Black Fungus Rise During COVID-19?
A sharp jump in cases appeared during the COVID-19 pandemic, mostly in India, which made the harmful black fungus disease hit headlines around the world. Several factors lined up here at the same time, the first being that many severely ill patients were given steroids. This was to help them with COVID-19, but its side effects led to a weakened immune system and raised blood sugar, which put the person at risk.
A large number of patients already had diabetes that was poorly controlled, and as many of them spent long hours in crowded hospitals, this just eventually raised their risks.
Together, these factors created a rare but real wave of what doctors named COVID-19-associated mucormycosis. The virus was not the one causing the mold to affect people. The treatment was weakening their immune system, thus increasing their risk of catching black fungus. Once the surge in severe COVID-19 cases came down, the reports of the black fungus disease dropped as well.
How Do Doctors Treat Black Fungus?
The treatment for black fungus works best when it starts early and hits the infection from more than one direction. The core medication given is a strong antifungal medicine, usually given through a vein. One of the most commonly used drugs for this is amphotericin B.
Surgery is the second option used alongside medications to treat the fungus. As the mold kills tissues and cuts off the blood supply, doctors remove the dead and infected areas through surgery to help the drugs reach what is left and prevent it from spreading.
In the worst cases where fungus affects the face or eyes, the surgery can completely change how a person looks. Hence, it is advised to seek help early.
The third part is fixing the root cause. As black fungus is more harmful to people with weak immune systems, it is important to bring the high blood sugar under control and remove the patient’s dependency on steroids if the doctor allows.
Treatment for a black fungus infection usually requires a dedicated team of specialists such as the doctors at Wockhardt Hospitals, working together over many weeks.
Is it Possible to Prevent Black Fungus?
There is no method to prevent black fungus, since it lives naturally in the soil and the air we breathe. The only way to lower the risk is to protect people whose defenses are weak.
For someone with diabetes, the way to prevent it would be to maintain their sugar levels at a normal level.
For patients depending on steroids, taking them in controlled amounts guided by a doctor instead can help a lot.
For people with very weak immune systems, staying away from dusty building sites, wearing a mask in high-dust places, and keeping wounds clean and covered can reduce the risk of contact.
The prevention methods mentioned above cannot promise anything, but general care and quick attention to odd black fungus symptoms would be the most practical step to take for those already at risk.
The Fate of Black Fungus
Black fungus has caused a lot of fear over the years, even though most people are not at high risk. The infection is rare, and it does not spread from one human to another. A healthy body can clear the mold without the person even noticing it.
The only ones at risk are people with a weak immune system, with health conditions like diabetes, cancer, transplant medicines, or a serious illness.
For anyone who’s at high risk of catching it, looking at early signs like facial swelling, black nasal crusts, or a chest illness should be taken seriously, and immediate medical care should be sought.
FAQs on Black Fungus
1. Is black fungus a contagious disease?
No, black fungus is a non-contagious disease and does not spread from person to person. It cannot be passed through a cough, a touch, or a shared room.
2. Can healthy people get black fungus infection?
For a healthy person, the risk of getting black fungus is very low, because a strong immune system clears the mold out of the body. The only exception is a black fungus skin infection, which can happen when contaminated soil or dirty water gets into a deep cut or burn. Even then, cases in healthy people stay rare.
3. What are the early signs of black fungus infection?
Early signs depend on which part of the body the mold targets first. The common signs include a blocked or bleeding nose, black crusts inside the nose, pain or swelling on one side of the face, headache, or a fever. If the person has swelling or blurred vision around the eyes, or a worsening cough with chest pain, it can point to a more serious spread.
4. How fast does black fungus spread?
Black fungus can move quickly, which is why doctors treat it as an emergency. In serious cases, the mold may travel from the nose and sinuses toward the eyes and brain within days to a few weeks. Early treatment is the only way to slow it down.
5. Is black fungus curable?
Yes, black fungus can be cured, and the odds are best when it is diagnosed early. The treatment combines antifungal medicine, surgery to cut away dead tissue, and control of the root cause, such as high blood sugar. If there are delays, it can lower the chances, as the mold spreads really fast. The United States Centers for Disease Control and Prevention has reported a death rate of about 50 percent.
6. What triggers black fungus infection?
The infection starts with contact with mucor molds, which live in soil, compost, rotting fruit, and damp surfaces. A person can trigger black fungus by breathing in the spores or getting them into a wound, which can begin an infection in someone whose immunity is very low.
