Dogs with contact allergies may develop rashes or hives, and the affected areas can become swollen or blistered. Identifying ...

"Flea allergy dermatitis may be diagnosed in dogs who are intensely itchy with a skin rash and visible fleas or flea dirt. There doesn’t have to be a large number of fleas for the diagnosis to ...

occasionally a dog may be allergic to the medication itself. Signs of a Benadryl allergy include: Red rashes on the skin Swelling of the face and tongue Runny nose and eyes Diarrhea, vomiting ...