Demodex is a skin mite that lives in the hair follicles and oil glands of it’s host (your dog). It is generally referred to as mange. Demodex mites are microscopic and must be viewed through a microscope to be seen. All animals have natural colonies of mites, but in some pet’s, usually young dogs or dogs with compromised immune systems, this colony can gets out of control. Signs of demodex mites might include patchy hair loss or itching and skin irritations that generally start on the head - including muzzle and around the eyes. A simple skin scrape is needed for diagnosis. Treating the secondary skin infection is just as important as treating the mites. Demodex can be challenging to treat but is not a health concern to humans or other pets in the home.