What is Demodex Mange in Dogs and Puppies?

Demodex mange, also know as red mange, puppy mange or demodectic mange, affects the skin of young dogs. The immature immune system of young dogs makes them more susceptible to development of demodex mange, although older dogs with suppressed immune systems can develop the condition.

  1. Classifications

    • Veterinarians classify demodex mange according to the areas affected and the amount of skin that is involved. Localized demodex mange affects isolated spots on the dog, usually the face, and creates a spotted appearance. Generalized demodex mange affects the skin of the entire dog. The most resistant form, demodectic pododermatitis, affects only the dog's paws.

    Symptoms

    • Symptoms of demodex mange include crusty, red lesions with areas of hair loss. The areas may appear moist or greasy. Itching may or may not occur. Dogs with extensive skin involvement may develop fevers and become lethargic.

    Cause

    • Demodex mange is caused by a parasite known as demodex canis. This small mite lives in the dog's hair follicles.

    Treatment

    • Treatment varies according to the amount of involvement. Localized demodex mange usually responds to applications of lotions and dips aimed at killing the demodex mite. More intensive skin involvement may require treatment with oral medications such as ivermectin. Veterinarians often prescribe corticosteroids to control itching and antibiotics to control secondary bacterial infections.