Q. What causes hair loss on a dogs back

Answered By

A. Hair loss in dogs can be caused by fleas or other external parasites (like mites, which cause mange), allergies, and hormonal diseases. Knowing more about your pet, such as his lifestyle, age, and environment would help to figure out what's more likely. If he gets a flea prevention product regularly and the skin is normal in appearance other than the hair loss, and he's not itchy, then allergies and parasites are less likely than hormonal diseases, like hypothyroidism. Your vet can help you figure out what's specifically wrong with your dog, and treat appropriately.

DISCLAIMER: The answers in Ask petMD are meant to provide entertainment and education. They should not take the place of a vet visit. Please see our Terms and Conditions.


Ask an expert about your unique situation now FOR FREE!

IMPORTANT: The opinions expressed in Ask petMD content area are solely those of the User, who may or may not have medical or scientific training. Our Ask petMD experts include veterinarians, vet techs, veterinary students, pet trainers, pet behaviorists and pet nutritionists. These opinions do not represent the opinions of petMD. User-generated content areas are not reviewed by a petMD veterinarian or any member of the petMD editorial staff for accuracy, balance, objectivity, timeliness, or any other reason except for compliance with our Terms and Conditions. petMD does not endorse any specific product, service, or treatment. Do not consider petMD user-generated content as medical advice. Never delay or disregard seeking professional medical advice from your veterinarian or other qualified healthcare provider because of something you have read on petMD.