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Why is my puppy sick with burst lumps, dry retching, and shaking?

Updated On September 23rd, 2025

Pet's info: Dog | Staffordshire Bull Terrier | Female | unspayed | 10 months and 3 days old

My Staffordshire Bull terrier puppy of 10 months has had small lumps on her back and under her forearms for about a week. One of them burst today and it was filled with pus. She now seems poorly and has been dry retching and shaking for about half an hour.

1 Answer

Most Helpful Answer

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Answered By Jenna Beyer, DVM, MBA, cVMA

Veterinarian, Certified Veterinary Acupuncturist

Published on August 19th, 2017

I am not sure if the skin and vomiting are related. Common causes for the skin issues you have described include bacterial infection, fungal infection, mites, fleas, allergies, among others. The pus indicates either infection or an autoimmune issue and she will most likely need oral antibiotics to fix this problem. Possible causes for nausea include dietary intolerance, dietary indiscretion, food allergy, intestinal parasites, GI blockage, gastroenteritis, bacterial or viral infection, IBD, pancreatitis, among others. If the vomiting or inability to eat food continues for 24 hours, I recommend that she see a vet as soon as possible.

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