What are microscopic creatures that cause mange?

Mites are microscopic arthropods that specifically cause mange, a skin condition affecting animals, particularly mammals. These tiny creatures burrow into the skin or reside on its surface, leading to irritation, itching, and inflammation, which can result in significant discomfort for the affected animal. There are different types of mites that can cause various forms of mange, such as sarcoptic mange caused by Sarcoptes scabiei and demodectic mange caused by Demodex mites.

Fleas, while they can cause skin irritations and other issues, are larger than mites and belong to a different category of parasites. Ticks are also larger and known for transmitting diseases rather than being the primary cause of mange. Worms, generally referring to internal parasites like roundworms or tapeworms, do not cause skin conditions like mange but instead affect the digestive system of the host. Therefore, the correct choice is mites, as they are directly responsible for mange in animals.