mange

This term is used exclusively in a veterinary or zoological context to describe a specific parasitic infestation. It carries a strong connotation of neglect or poor health, often evoking images of scruffy, diseased animals in shelters or wild environments.

Because it refers to a medical condition or a state of disease, it is treated as an uncountable noun. You would not refer to "manges" in a plural sense; instead, you would describe a "case of mange" or "an outbreak of mange" to quantify the occurrence.