If your dog has been itching itself constantly, you need to take your dog into vet or your local animal hospital so that can figure out what is behind your dog's itchy skin. Here are the top three reasons that your dog may have itchy skin.

#1 Flea Bites

One of the most common reasons that a dog starts to scratch their skin is because of flea bites. When a flea bites, it does more than create a bump on your dog's skin. It also leaves behind its saliva. A flea's saliva is not harmless; many dogs are allergic to the saliva. This increases the pain and itching feeling that getting bitten by a flea regularly induces for a dog who's allergic to the fleas' saliva.

If your vet determines that your dog is itching because of fleas, you can fix the problem relatively easily. You will need to give your dog a really good, vigorous bath with some flea removal soap. Then, you will need to administer your dog flea prevention medication. In order to get rid of any fleas that may be hiding around your house, you can sprinkle sodium borate onto your carpets inside of your house and on your lawn outside. This will help kill and keep the fleas away.

#2 Contact Dermatitis

If fleas are not the reason behind your dog's itching skin, it may be contact dermatitis. Contact dermatitis is a condition where your dog has sensitive skin that is easily irritated by things such as the perfume used in dog shampoos or from grass pollens.

If your vet suspects that your dog suffers from contact dermatitis, you are going to have to work on ruling out items that could be causing your dog to react. You will need to change the shampoo that you use on your dog. You may need to change out your dog's food and water bowls. You may need to stop using perfumed carpet cleaners and scents. Your vet will create a plan with you based on your house and your lifestyle to help you rule out what is causing your dog's dermatitis to flare up.

#3 Food Allergies

Finally, if the two items listed above are not causing your dog's itchy skin, it could be the food that your dog is eating. Just like humans, dogs can be allergic to certain types of food. Just like with the contact dermatitis, your vet will create a plan with you to help you figure out what your dog can and cannot eat. Sometimes, simply switching the type of dog food you buy is all you need to do to give your dog some relief.

If your dog's skin is itching, it may be from flea bites, contact dermatitis or food allergies. The only way to know for sure is to visit a vet or local animal hospital like Lamb's Gap Animal Hospital and have them rule out each category.