My dog has skin problems and is losing weight. What's wrong?

I am very concerned by these pictures. I worry that the skin may be a manifestation of an underlying health issue. I would highly recommend blood work and a skin biopsy to help identify what the underlying problem is. Unfortunately cancer is high on my list of concerns. Best of luck and I hope she improves soon.

I am sorry your dog is not feeling well. The information provided and picture don't really match. If a patient is drinking more and losing weight I would be concerned about endocrine diseases like diabetes and cushings disease. However the picture looks more like possible skin mites or an underlying autoimmune disease I would recommend taking her to a veterinarian to help you resolve the issues. They most likely will need to run basic bloodwork and possible a skin scrape to determine if mites are present.

Hi, I'm Dr. Johnson. I think I just answered a question about Aysha! The tail tip doesn't worry me, a lot of dogs get the hairless area. My own dog has it. The other picture of the moth eaten appearance to her fur is not normal. A lot of skin conditions looks the same unfortunately. The hair loss could be form a skin infection (bacteria or yeast), from demodex (a non contagious mite) or ring worm. Also I know we were discussing her being over weight and a low thyroid. A low thyroid can predispose dogs to skin infections. Also food allergies can also. I think you have a few reasons to see your Vet now! Good luck!

With the weight loss as well as the skin condition I would recommend a blood test to rule out internal diseases such as liver disease as well as a skin scrape and possible biopsy in order to fully investigate the underlying cause and to guide the most appropriate treatment

This looks like it may be from an allergy. I would check for fleas first due to distribution of lesions and then consider the food. Your vet can examine it and see if there is a secondary infection that needs to be treated

Hmm. This does sound bit more than just allergies. If the bloodwork results came back relatively normal and the allergies are not being controlled by conservative allergy medications prescribed by your veterinarian, then I would consider having a skin biopsy done. Skin biopsies are done on pets that have a more complicated skin disorder. Also your pet may require a specific, more advanced, blood test that goes beyond the regular baseline bloodwork. It would help if we could see your pets actual bloodwork, even though the vet said it was normal. Because even normal bloodwork can sometimes offer clues. I know it sounds like your pet requires lot of testing; however, if you desire to know for sure what the underlying problem is, you have to do more diagnostic testing than the initial screening tests. And finally, in an older pet unfortunately you also have to consider certain skin cancers as a cause of your pets illness. Especially if he seems to be losing weight over time.

Allergies should not cause a dog to lose weight. He should be examined by a vet for a workup. Your vet can run bloodwork to look for kidney disease, liver disease, endocrine diseases, cancer, etc. Please call your vet to schedule an appointment and work-up. Your vet could also prescribe an anti-histamine to control his allergies.