What Causes Hives and Facial Swelling in Dogs?
What would cause a dog’s head to swell and bumps to develop
all over her back & sides?
Doddie
Abilene, TX
Acute allergic reactions commonly cause the symptoms you describe. Insect bites or stings frequently lead to facial swelling and welts on the body. However, anything that stimulates the immune system can cause the same symptoms. Sensitive individuals may react to pollen, certain foods, detergents, chemicals or vaccines.
Acute allergic reactions are potentially life-threatening. If the tissues of the throat swell along with the face, breathing can be compromised. In rare cases, facial swelling and hives on the body can be precursors to shock.
Any pet that suddenly develops hives or facial swelling should see a vet immediately on an emergency basis. Injectable medications usually can reverse the symptoms and prevent more serious consequences.
Photo credit: Gonzalo Rivero.
You have questions. 
What’s involved in the care of a puppy? They are adorable, no one can argue that, but not everyone may have the time it takes to raise one. At 7 weeks old, caring for Bruno is like caring for a newborn baby.
My boyfriend has a boston terrior and she got stung by a bee and developed hives, she hide under the bed for some time, when she came out she looked pretty bad. She was rushed to the vet and eventually the swelling subsided. It was a tramatic day.