A fungus is a type of living organism that survives from drawing nourishment from another living organism, decomposing it at the same time. Mushrooms are a type of fungus typified by a large fruiting body. Mold is a type of fungus characterized by small multi-cellular filaments that thrive where moisture and organic material are plentiful.

There are several diseases that are caused by a fungus growing on or in the human body. These range from the merely annoying, such as athlete's foot, to the life threatening such as aspergillis.

Most fungal diseases are found in the tropics, but there are several that are common in northern climates. However, fungal infections in the Western world are rare and, as a result, difficult to diagnose.

Community content is available under CC-BY-SA unless otherwise noted.