Dog has fever, swollen neck after antibiotic & Vectra 3D. Reaction?

I would worry that Vettie could have a disease like lymphoma if his glands are not better with antibiotics. I’d recommend making a recheck appointment with your vet. The next step might be to take an aspirate if the glands using a small needle and sending the sample to a pathologist to review.

It is difficult to know the cause without seeing the swelling. Your dog could have an infection, allergic reaction, injury, or a mass causing the swelling. Your dog really needs to be examined by a vet to determine the cause and then treat the problem. Your dog may need an antibiotic, anti-histamine, anti-inflammatory, or other medications to treat.

It sounds as though your vet initially suspected an infection causing the swelling around Lexi's neck. There can be some very minimal fluctuation in the prominence of the salivary glands and lymph nodes that are located under the neck, which can certainly occur with infections. However, other conditions can also cause swelling in these areas. Puppy strangles (also called juvenile cellulitis) is an autoimmune condition that can cause some pretty prominent swellings around the neck. Given Lexi's age, this would be my first suspicion. Other issues, including lymphoma or a salivary mucocele, are always possible, although they'd be highly unlikely in such a young puppy. At this point, I think your next step is to take Lexi back to her vet for a follow up visit. Your vet will likely want to run some diagnostic testing on this swelling or even some baseline blood work to check her blood cell counts and organ function. Depending on their findings, they may prescribe steroids to help treat puppy strangles or another medication to treat a different condition. I hope that everything goes well!

This is more suspicious of an infection rather than allergies. In order to treat this effectively, you would need to first have the specific infection/ condition diagnosed. This would require some testing by your veterinarian. I would not recommend you give any of the medications you are currently giving without a veterinary prescription. Cephalexin is a specific antibiotic that is only recommended for certain conditions. Prednisone is a steroid that can make your dog feel better, but does so by suppressing the immune system, which can allow the infection to get worse. Benadryl is also a symptomatic medication that is only reccomended in specific conditions. I reccomend having Ranger evaluated by a veterinarian as soon as possible, because it's possible that this problem can get much worse without the necessary treatment. I hope that helps and Ranger gets better soon.

Antibiotics and steroids would be a guess of a treatment simply used to cover the possibilities. Enlarged lymph nodes can be a sign of cancer (lymphoma) or an infection. Steroids can interfere with a diagnosis of cancer but also help keep them comfortable for a short while It is best to have the gland aspirated or biopsied. The results can be back in 24-72 hours so you know exactly what you are dealing with. Generally a steroid and antibiotic can be started to cover your basis until you get a definitive answer. If it is cancer, then the antibiotics are pointless and can be stopped. IF it is inflammation or infection, then you are already on antibiotics to help cover you.

102 is considered a normal temperature in dogs, however if Jaxon is having swelling of the face or neck, or is having new symptoms such as the diarrhea, I would bring him back into your vet or ER clinic. Benedryl can be given for allergic reactions, however without knowing if any medication was given to him at his vet visit or what is causing the reaction, it would be best to seek veterinary care, especially if it's come on rapidly.

It sounds like Hero is starting to feel better based on your information. Swollen lymph nodes can be secondary to infection, inflammation or local disease. It is possible the antibiotics has helped the lymph nodes go back to normal size. Unfortunately with out additional testing like X-rays or aspirates of the lymph nodes it is hard to give you additional direction. I would recommend following up with your vet to make sure Hero makes a speedy recovery. I hope that helps