Demodectic Mange in Dogs

Breeds documented
4
Published sources
3

Overview

Demodex mites normally live in small numbers in hair follicles, the pockets where a dog's hairs grow, without causing illness. Demodectic mange develops when these mites multiply excessively, leading to inflamed skin and hair loss. It may affect a few small patches or spread widely across the body. The widespread form can be complicated by bacterial infections, and adult cases may be linked to another illness affecting the immune system.

Signs to watch for

  • Small bald patches with redness and flakes
  • Widespread hair loss with swollen or crusted skin
  • Acne-like bumps on affected skin
  • Inflamed paw pads
  • Unusual tiredness in more severe cases

Localized disease usually appears before 1 year; widespread disease can begin in young or adult dogs.

When to get help Book a vet visit when bald patches appear, especially with redness or swollen paws.

Diagnosis and tests

Vets usually confirm demodectic mange by examining deep skin scrapings for mites in the laboratory. They may also investigate bacterial infections and other illnesses that could have weakened the dog's immune defenses. Repeat scrapings help track the mite numbers during treatment.

Breeds with documented risk

4 breeds

By breed size
  • 1 Toy
  • 1 Medium
  • 1 Large
  • 1 Giant

Inheritance

  • Not yet known

    None of the sources we use states how this is inherited in dogs yet.

We've gathered what published sources say about this condition, so you can talk it through with your vet. It isn't veterinary advice: you and your vet know your dog best.

Sources

  1. merckvetmanual.com
  2. Akbash: akbashclub.com
  3. Bulldog: doi.org