My dog has red swollen lumps on her belly. Could it be an allergy?

These do indeed look like part of an allergic reaction (wheals/hives) and generally settle down after 12-24hours. Monitor closely for any internal complications such as vomiting, diarhhea, panting or weakness from an increased heart rate which may require hospitalisation and intravenous fluid drip. It can be difficult to identify the original trigger allergy bloods and a hydrolyzed diet such as royal canin anallergenic should be considered if recurring often

Without seeing it in person, it is impossible for me to say. This could be a bug or spider bite. It could also be a local allergic reaction or an area the Hazel has been chewing causing the swelling. I would give her some beandryl to see if this helps. If it doesn't, I would have your vet take a look to ensure there isn't an infection. Your vet will be able to put her on antibiotics or other meds as needed. I hope this helps! https://www.petcoach.co/canigive/dog/benadryl/#

Oh no, poor Scout! She could be suffering from an allergic reaction, and it's very concerning that her neck is quite swollen and her lumps are getting worse. She needs veterinary care now to diagnose what is causing her symptoms so she can be treated. Please take her into a vet now.

This looks like an allergic reaction to something or general allergies. Make sure he is on a good veterinary prescribed flea control. You can try to shampoo him in a chlorhexidine shampoo to help heal the red bumps. You can also Give him 75 mg (3 adult) Benadryl to help with any itching. If he isn't itching and/or the bumps aren't improving, I would contact your vet for an exam to ensure he doesn't need a stronger allergy medicine or antibiotics. I hope this helps!

This is probably due to an allergy, although it could also be infection or mites. First of all, in order to rule out skin parasites, you will need to treat with a high quality flea treatment (advocate or advantage), then ask the vet to perform a skin scrape - this might reveal an infection or a mite infestation. If all of those came back negative, the next step is to treat the allergy symptomatically and try to discover the cause of the allergy. Three main type of allergies are usually affecting pets: food allergies, flea and parasite related ones and environmental type (allergens coming from trees, pollens, dust etc etc). Some medications can be given by the vet in order to repair any possible skin lesions (like steroids and antibiotics). Please do not hesitate to contact us again on the forum or by requesting a consultation if you have any more questions or to discuss it any further.

This is probably due to a severe allergy, although it could also be infection or mites.

First of all, in order to rule out skin parasites, you will need to treat with a high quality flea treatment (advocate or advantage), then ask the vet to perform a skin scrape - this might reveal an infection or a mite infestation.

 If all of those came back negative, the next step is to treat the allergy symptomatically and try to discover the cause of the allergy.

 Three main type of allergies are usually affecting pets: food allergies, flea and parasite related ones and environmental type (allergens coming from trees, pollins, dust etc etc). Some medications can be given by the vet in order to repair the skin lesions (steroids and antibiotics). Please do not hesitate to contact us again on the forum or by requesting a consultation if you have any more questions or to discuss it any further.

Poor baby! Yes, these appear to be hives most likely from an allergic reaction. I would give her 50mg benadryl by mouth and see how she does. If she gets more, starts vomiting, having diarrhea, or trouble breathing I would get her right away. Good luck. She is adorable