See your vet
What it can look like. A general, vet-reviewed example — signs vary and this is not a diagnosis. When in doubt, ask your vet.
Hives / welts in dogs
Clinical name: Urticaria
Sudden raised welts and a puffy look, often appearing within minutes to hours.
Where it shows upface · trunk · generalized
Typical patternFace first, then trunk; can be all over.
Linked allergy typesAcute reaction · Contact allergy · Food allergy
Food vs environmentalSudden onset after a new food, treat or sting suggests an acute reaction.
What you can do
Watch the face closely — if the muzzle, lips or eyes swell or breathing changes, go to a vet now.
Don't confuse it with
Other causes a vet will want to rule out: insect sting, vaccine reaction.
This is educational information, not a diagnosis or treatment plan. Always see your veterinarian about your dog's health.
