If your dog is exhibiting any of the symptoms above, make an appointment with your veterinarian. Your veterinarian will assess your dog’s symptoms by taking a closer look at his skin and any other parts of his body that are showing a reaction. More than likely, your veterinarian will suspect that his symptoms are due to an allergy, but will have to dig deeper to find out the specific allergen. The medical professional will ask you a variety of questions pertaining to many types of environmental factors that your dog is exposed to on a daily basis. He may ask you questions about how often he stays outdoors, what types of plants he comes in contact with, where he likes to rest most of the time (to get a better picture of what types of surfaces his body touches most often), and specifically what is in his diet. These types of questions are the starting point to discovering precisely what is causing his allergic reaction.
Your veterinarian may perform several tests, such as blood work, a biochemistry profile, a urinalysis, and possibly a skin test. Skin tests, however, are usually performed once other treatment methods do not seem to be successful.
There are many conditions that may cause similar symptoms as a food allergy. Gastrointestinal issues, irritated skin, and other symptoms may be due to an underlying disorder, so the veterinarian will need to perform any test in which he feels are necessary to rule out any illnesses. One important characteristic of food allergies is that the symptoms are not “seasonal” and occur year-round. This will help the veterinarian rule out any seasonal allergies once other conditions are dismissed.
If your veterinarian suspects a food allergy, he will give you specific instructions on how to figure out the specific food item that is causing your dog distress. He may suggest an elimination diet, which must be followed very closely according to the veterinarian’s instructions and does take several weeks before the offending ingredient is discovered.