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My dog is vomiting, gaining weight, and losing hair. What's wrong?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed | Male | unneutered | 1 year and 8 months old | 10 lbs

My 1yr old male dog is licking a lot, usually has diarrhea, seems to frequently urinate, and has gained weight and is less active. He vomits about 1-2 times a week. He wines a little sometimes too and seems like he may be in pain at times like after waking up. His eyes are red around them and he's starting to lose a bit of hair in a few places (knee, foot, eyebrow). What do you think is the cause and how should i handle it??

1 Answer

Most Helpful Answer

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Answered By Lauren Jones VMD

Veterinarian

Published on October 23rd, 2021

Oh my - it sounds as though Riley has a lot going on. It's likely that his excessive licking is associated with the hair loss that you've noticed, as licking is a sign of itchiness in dogs. I agree that his whining sounds like a sign of discomfort. This could all be associated with his other issues, or due to other skin conditions, like mange, ringworm, or allergies. Vomiting, diarrhea, weight gain, and excessive urination could be due to a number of different health conditions. Some of these possibilities include gastrointestinal viruses, inflammatory bowel disease, kidney disease, liver disease, endocrine disorders (such as Addison's disease), or food allergies. The challenge is that all of these conditions are treated very differently, so it's important to figure out the root cause of all of Riley's issues. At this point, Riley really needs to be examined by his vet and have some diagnostic testing performed. I assume that your vet will likely recommend some baseline bloodwork to check on his organ function, as well as a fecal flotation test for parasites, and skin testing to see if any infectious conditions are present. Based on their findings, they'll be able to come up with the best course of treatment for Riley. I hope that everything goes well!

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