In the dog, the most common symptom associated with allergies is itching of the skin, either localized (in one area) or generalized (all over the body). In some cases, the symptoms involve the respiratory system, with coughing, sneezing, and/or wheezing. Sometimes, there may be runny discharge from the eyes or nose.
How do you know if your dog is having an allergic reaction to food?
In the dog, the signs of food allergy are usually itchy skin or digestive disturbances such as vomiting or diarrhea. Other more subtle changes can also occur, including hyperactivity, weight loss, lack of energy and even aggression.
How long does it take for a dog to show signs of an allergic reaction?
The swelling occurs 30 minutes to a few hours after the exposure. A veterinarian will often give dogs with this reaction an antihistamine injection. Untreated, it may take a day or two for the swelling to subside. A different reaction we see 6 to 24 hours after exposure to the antigen is hives.
Can I give my dog something for an allergic reaction?
Antihistamines. Diphenhydramine (Benadryl®), cetirizine (Zyrtec®), and loratadine (Claritin®) are commonly used antihistamines that relieve allergy symptoms or counteract allergic reactions. Antihistamines are usually safe but can make some dogs drowsy and others hyperactive.
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