Allergies in dogs can cause them to suffer from a variety of symptoms, including vomiting. Allergies are the result of a dog's immune system overreacting to certain substances (such as pollen, food, insect bites, etc.), causing a series of inflammatory and allergic reactions in the body. Vomiting caused by dog allergies may be caused by gastrointestinal inflammation or viral infection in dogs.
After vomiting, dogs may also have other symptoms, such as loss of appetite, diarrhea, abdominal pain, etc. If your dog develops allergy symptoms, including vomiting, take him to the veterinarian as soon as possible. Your veterinarian can perform examinations and tests to determine the cause of your dog's allergies and provide appropriate treatment options to relieve your dog's symptoms.
