My dog has hair loss and fleas. How to tell if it's allergy or mange?

Allergies and mange would be at the top of my list. A vet can easily check for intestinal parasites (mange) and then figure out a treatment plan for allergies if you don't have any parasites. There are many many different way to treat allergies, depending on how much you want to spend on medications/testing.

Mange is caused by mites. There are two types of mange, sarcoptic mange and demodex mange, each caused by a different mite. Sarcoptic mange is highly contagious to other animals and humans, while demodex mange is not. The symptoms depend on what type of mite is presents. Yes a skin allergy could potentially look like mange, but a vet will be able to diagnose the underlying cause. You will need to take Mister Brown into the vet. Best of luck.

It is very possible that Rylie has both demodex as well as underlying allergies. Demodex is a mite that we commonly see in young dogs, like Rylie. It is very easy to detect on skin scrape, so your vet should be able to readily tell you if she has it or not. Allergies can be a little more difficult to figure out, as they can be environmental, food related, or seasonal. If it is a diet related allergy, it could take 2 months of a new diet to see any improvement. Since she has a few pimples, I would be concerned that she may be developing a skin infection that requires antibiotics. I would take Rylie in to have an exam with your vet and a skin work up to see what the underlying cause of her hair loss is and what treatment she needs to be on.

Poor guy. There are really only 2 types of mites that we see in veterinary medicine- Scabies and Demodexx mites. Scabies (a type ofmite) is infectious to people so if you yourself are not itching then you can kind of rule that one out. The other mite, Demodexx isn't infectious to people or other pets, and nowadays it can be treated with oral flea preventatives such as Bravecto, Nexgard or Simparica + a medicated topical shampoo through your vet. I would recommend just starting Baileys' on one of these to cover any kind of mite issue. Then I would suggest getting Bailey on an oral antibiotic to clear up the skin infection that is present. The ears look to be infected as well. This will require a topical ear medication and cleaner from your vet to resolve. Skin allergy testing is not commoonly used anymore due to the poor overall response to allergy immunotherapy shots. THe most common allergy medication used nowadays is Apoquel. I would ask your vet about this as well, especially if mites are not the underlying problem, which can be easily confirmed or denied with a simple skin scraping test done through your vet. I hope that you can get Bailey's skin issue resolved soon. Best wishes and take care!

Hello. The normal body distribution for Sarcoptic mange is along the ear edges and on the legs. In the photo, Chi is showing the signs of classic flea allergy dermatitis. Her skin appears to have a secondary infection. It would be best to get your vet involved in her treatment as this will require more than just flea prevention to resolve this. She may need some anti itch medication and a prescription antibiotic. Thank you for using Petco Pet Education Center, formerly Petcoach

You are absolutely correct that mange or allergies are possible. The doctor may recommend a diagnostic called a skin scrape to check for mites. For now just protect the area from any itching. It doesn’t look really inflamed so I’m not sure there’s much you can do at this point. As a general recommendation, starting Lexi on an omega 3 fatty acid for dogs can help improve skin health and it certainly won’t hurt anything. I hope this is helpful and please feel free to post any additional questions.

Mites and allergies are usually the top offenders for itching and hair falling out. If Snowball has not been checked for mites, then I would be surprised, because we (vets) usually want to rule this out as a cause for itching, before treating for allergies (especially food allergies, which are a more rare cause of allergies). A vet can check for mites bay scraping the skin and looking for the mites under the microscope. This requires about 10 minutes to do at a veterinary clinic. I definitely recommend consulting your vet about this, if it hasn't been done before. I hope that helps and Snowball gets better soon.