Mucormycosis is an infection that can affect the sinuses, brain, lungs, and sometimes the skin. The infection occurs most often in people who have a weakened immune system. It is a serious infection that can be fatal.

Mucormycosis is caused by a fungus that is often found in soil, decaying plants or wood, and compost piles. The fungus enters the body through cuts or scrapes in the skin or by being inhaled into the sinuses and airways. Once in the body, the fungus can spread rapidly and quickly become fatal.

A healthy immune system can often manage the fungus and eliminate it before problems begin. However, the fungus can grow and cause severe damage if the body does not have a strong immune system.