My dog had heartworm. Why is she coughing, foaming, and tired?

Question

My foster dog tested heartworm positive positive. She was treated and is on prevention twice a month. She is coughing do bad she is foaming out her mouth. Her nose is dry. Her breathing sounds like she is stuffy in her nose. She is also being very lazy. Is this normal? Pet's info: Dog | American Staffordshire Terrier | Female | 40 lbs

Sara Farmer, DVM · Accepted Answer

I would be concerned about these signs even if they are related to heartworm disease, and would not consider this type of coughing as typical for a dog recovering from heartworm. If she seems to be having trouble breathing you should seek emergency veterinary care. A chest x-ray might be recommended depending on how Tess's chest sounds on physical exam.

My dog had heartworm. Why is she coughing, foaming, and tired?

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