My dog suddenly has welts on his face and body, what's wrong?
Updated On September 23rd, 2025
Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Male | neutered | 40 lbs
My dog has welts all over his face and a few on his body all of a sudden
2 Answers
Most Helpful Answer
Published on January 10th, 2019
This sounds like your dog has an allergic reaction to possibly an insect or spider bite or allergen. As long as your dog has no problems breathing or does not appear ill, you can wait it out. Should your dog have breathing problems or appear ill, vomits or the welts do not go away within 12 hours, you should take Romeo to your veterinarian or a petER for an exam, an antihistamine and/or a steroid injection.
12Pet Parents found this answer helpful
Related Answers from Veterinarians
-
Published on September 29th, 2017
Yes it appears to be an allergic reaction. You should get him to a vet for an exam. Injections of steroids and anti-histamines are usually needed to stop the reaction before it gets even worse. Sometimes the facial swelling will get so bad that it causes them trouble breathing. After the injections your vet will give you medications you will need to give at home for a few days as well. Hope this helps. Best wishes.
1Pet Parents found this answer helpful
We're worried our puppy is having an allergic reaction on her skin. There seems to be humps/welts forming underneath her fur. They're not red but seem to be getting worse. Almost look like large mosquitoe or spider bites.
My dog has welps all over his sides. It happened overnight. He's not itching and has been on the same food almost 3 months
My dog is having nausea, redness/inflammation around eyes and on paws, and welts all over body. Do you think this is an allergic reaction, if so or if not what treament should I seek?
I put my boxer outside last night for about ten min. when he came in he had welts all over his body, so I gave him a Benadryl, we went to sleep and when I got up at 5 this morning it was a lot worse and all over his entire body. What could it be?
I just gave my dog a bath and her face is swollen and she has welts on her legs. I’ve used this shampoo before and never had this reaction happen
Hi my dogs faces is swollen he has hives on his head & around his butthole, his chest down to his back legs are red & hot && his ears are hot & red he keeps shaking his head like if someone was to blow in it & he keeps using his two front paws to scr
Woke up this morning and Poppy's eyes were swollen and is covered in welts, other than shaking her head constantly and scratching she doesn't seem to be feeling ill in other areas, however through out the day more and more welts have appeared
My dog has come up with bumps all over her what would be your advice or what would you say it could be I have attached 3 photos.
Hello, my dog winston has woken up itching and covered in red lumpy type rash and isn’t his happy normal self also he’s very hot to touch
Hi. My dog got sudden spots that appeared on his snout. The spots merged into one & swelled. What could this be?
Book an appointment with the pros – our expert vets are here to help.
