Why is my dog licking so much that a sore spot forms?

Pet-owners want to know: Why is my dog licking so much that a sore spot forms?

It’s a lot like kids who suck their thumb — once the habit starts, it’s hard to break. Here’s what you need to know about causes and treatment.

A dog’s list of annoying habits can often be endless. Obsessive itching, licking, scratching, urinating on your favorite rug, jumping up on people— endless. Similar habits, such as dog licking that is taken to self-harm levels, that results in the dog developing sores called lick granulomas.

Maybe you’ve seen this: a raised, red sore on a front leg that your dog licks at obsessively. Or perhaps you never seen your dog lick, but the sore is there all the same.

Chances are you told your dog to stop, so they learned to become secretive about licking. Well, these sores are surprisingly common.

Why your dog is constantly licking one spot

Dogs aren’t much different from us. Once the habit starts, it’s hard to break.

The reason is that the dog licking releases feel-good hormones called endorphins. The dog licks, it feels good, and the dog doesn’t want to stop licking.

You may hear your vet refer to the condition as acral lick dermatitis, or ALD, where dogs are licking their legs so much that sores developed.

Studies have shown that when nature’s own morphine-like substances — the endorphins — are involved in ALD, because affected dogs’ self-licking behavior decreased dramatically when the dogs were treated with endorphin antagonists. Since endorphins are released when stress arises, it can be confirmed that licking appears in situations where stress is involved.

Possible Health-Related Causes of the Licking

For most dogs, the habit starts with a trigger in the form of an itch, ache or infection.

It may be that the dog has arthritis or an allergy, and rather than lick the specific spot, the dog chooses a comfortable place to lick — which is often a forearm or paw.

Common triggers:

• Arthritis

• Parasitic infection that causes a general itch

• A bacterial skin infection

• Ringworm

• Skin allergies triggering an itch

More than half of dogs with acral lick dermatitis are suspected to have concurrent fear- or anxiety-based conditions or both (e.g., separation anxiety, noise phobia, anxiety-related aggression).

The Derma Dilemma

The problem is that a veterinarian cannot give the owner a specific recipe for a cure. The skin lesions will heal slightly, almost seem like they are going to heal, but then overnight (or during the day while left alone) the lick granuloma is activated by the dog licking the area raw once again.

Even worse, some dogs will simply switch to licking the other leg if you restrict their ability to lick the first leg by wrapping it in a cast, creating an even more annoying problem—now there are 2 lick granulomas!

Does Your Dog Do This? If So, Act Quickly.

If your dog starts to lick obsessively, seek the help of your veterinarian. Getting to the bottom of the cause, and early treatment, is the best way to stop the problem from becoming ingrained.

Alongside treating the lick granuloma, your vet may want to run tests to investigate any underlying problems.

Treatment of Lick Granulomas / Sore Spots in Dogs

Think of this as a 2-pronged attack: tackling both the sores and the underlying cause.

Lick granulomas are frustrating because even with successful treatment, the dog is likely to relapse. To stand any chances of long-term success, therapy must continue for at least 4 weeks after the symptoms have ceased.

Treating the sores:

• Antibiotics or antifungals

• Local anesthetic creams

• Anti-inflammatory medications (to reduce the skin tingle)

• Bandages or an Elizabethan collar (“cone of shame”)

• Mood-modifying drugs

Your vet may try one or a combination of the treatments above.

Frustratingly, putting an Elizabethan collar on doesn’t work well because as soon as it is removed, the licking starts again and the dog will activate the lesion all over again.

Addressing the underlying triggers:

• The first step is to find out what they are. This could mean blood tests, skin biopsies or radiographs.

• In the case of allergies, starting the dog on a hypoallergenic diet is a great idea, as is testing for environmental allergens.

• Regular parasite treatments against fleas and mites are crucial to keep parasitic itches at bay.

Ultimately, to find the right solution for your dog, speak with your vet.

---

Hear From Us Again

Don't forget to subscribe to our email newsletter for more recipes, articles, and clinic updates delivered straight to your e-mail inbox.

Related Categories:

Dog Health

Dog Eye Allergies: Symptoms and Treatment

If you notice that one or both of your dog’s eyes are red, you may be wondering what the cause could be.

Dogs with allergies more commonly show symptoms related to the skin or intestinal tract, but it is possible that allergies may be causing the irritation in your dog’s eyes—just like in people with seasonal allergies.

The medical term “allergic conjunctivitis” is used to describe inflammation of the eye that’s usually caused by environmental allergens like pollen and mold. Dogs with skin-based allergy symptoms (allergic dermatitis) are more likely to experience allergic conjunctivitis than dogs with no history of allergies.

If you believe that your dog is suffering from allergic conjunctivitis, it’s important to have them seen by a veterinarian to rule out other more serious diseases that can have similar symptoms.

Here’s what you need to know about dog eye allergies.

Symptoms of Dog Eye Allergies

In dogs, redness of the eyes is a vague symptom that can be caused by a wide variety of underlying diseases.

For allergic conjunctivitis, redness is usually seen in both eyes. You may also notice symptoms like:

• Squinting of the affected eye(s)

• Pawing at the face

• Discharge coming from one or both eyes

Dog Eye Allergies and Itchy Skin

If your dog has a history of itchy skin, it's worth mentioning to your veterinarian.

Dogs with itchy skin will more commonly experience allergic conjunctivitis than the general dog population.

Affected dogs are usually under 3 years of age when they first become symptomatic. Although all dog breeds have the potential to develop allergic dermatitis, common breeds with a predisposition for this condition include:

• Boxer

• Cocker Spaniel

• French Bulldog

• German Shepherd

• Golden Retriever

• Labrador Retriever

• Poodle

• West Highland White Terrier

How Do Vets Diagnose Dog Eye Allergies?

Although a test called “conjunctival cytology” may reveal inflammatory cells that will confirm a diagnosis of allergic conjunctivitis, the cells are not always present. As a result, many veterinarians will diagnose eye allergies through the process of elimination.

Your veterinarian may perform several brief tests to rule out diseases with similar symptoms, like eye infections, dry eye, or corneal ulcers. Other details, like your dog’s age, breed, and history of itchy skin, can also help point your veterinarian to this diagnosis.

In rare cases, a biopsy of the conjunctival tissue around the eyes—taken while your dog is under general anesthesia—may be needed to achieve a definitive diagnosis, or to rule out other, more serious causes of red eyes.

An emerging test called the conjunctival provocation test has shown promise as a quick and easy test to definitively diagnose allergic conjunctivitis. However, it’s currently not widely available and would likely be performed by veterinary dermatologists—not your general practice veterinarian.

What Can You Give Dogs With Eye Allergies?

In mild cases, simply flushing the eyes with sterile saline once or twice a day may be enough to remove the allergen and resolve the symptoms.

You should not use contact solution for this purpose.

Although antihistamines provide relief for people with eye-related allergies, antihistamines have a variable effect in dogs with this condition. Therefore, eyedrops containing steroids are often the treatment of choice for dogs with allergic conjunctivitis.

It’s important to note that steroid-based eyedrops can be very harmful to dogs with other, similar diseases in the eyes, so you should never start treatment without first consulting your veterinarian.

Severe cases may require the use of oral medications in addition to eyedrops.

Follow-Up Testing and Treatments

Generally, a recheck is recommended after one to two weeks of treatment so that your veterinarian can assess how well the medications have worked.

If minimal improvement is seen, it’s possible to be seen by a veterinary dermatologist, who can perform allergy testing and other diagnostics to uncover which allergens may be triggering your dog’s allergic conjunctivitis.

If possible, the allergens are removed, often by changing the diet. If removing allergens is not possible, your dog’s dermatologist may suggest immunotherapy for long-term treatment.

If the allergen can’t be removed or treated with immunotherapy, it is very likely that a dog with allergic conjunctivitis will experience flare-ups throughout her life. Fortunately, the symptoms caused by allergic conjunctivitis are fairly mild, and with proper treatment and management, affected dogs generally live long and happy lives.

---

Hear From Us Again

Don't forget to subscribe to our email newsletter for more recipes, articles, and clinic updates delivered straight to your e-mail inbox.

Flea Allergies in Cats and Dogs

Fleabites make most pets itch. But did you know—some cats and dogs are allergic to the pests! Your doctor may call this flea allergy dermatitis (FAD) or fleabite hypersensitivity. If your pet has a flea allergy, even one or two flea bites can make your pet's life miserable.

Many cats and dogs are allergic to fleas. In fact, FAD is the most common skin disease in dogs in the U.S. Flea allergies often spike in the summer, and pets that have seasonal allergies are more likely to have an allergic reaction to fleabites, but any pet can get FAD.

Spot the Signs

When a flea bites your dog or cat to draw blood, it injects saliva into your pet’s skin. Flea saliva is irritating to most animals, including humans. But the compounds in it can trigger an allergic reaction in some pets.

Everyday itching from a flea bite isn’t the same thing as a flea allergy. If your pet has FAD, the itching will be intense and last longer. Your pet may itch for up to 2 weeks after a bite and the itching will be severe and damaging to their skin.

Other signs of FAD include:

• A rash on your pet’s skin or raw, irritated, or bleeding areas on your pet’s body. Dogs usually have it near their back legs, stomach, or tail area. Cats are more likely to have it near their neck and face.

• Hair loss, especially in areas where the bites happened

• Small red or pink raised bumps that may look like pimples

• Constant itching, biting, clawing, or grooming

Help Your Pet Get Relief

Unfortunately, this isn't a one and done situation—it's a process.

Step 1: See your pet’s veterinarian. Don’t assume that because you can’t see any fleas, your dog or cat doesn’t have a flea allergy. Often, animals with one groom themselves constantly. They may remove any fleas from their bodies — but the allergic reaction from bites can last for weeks.

If your dog or cat is scratching itself, set up an appointment with your veterinarian. Fleas and flea allergies are common, but it could also be another health problem, like a tick bite. It’s important to get the right diagnosis before your pet starts any type of treatment.

A vet will check your pet’s fur and skin thoroughly for fleas and “flea dirt,” which is flea poop that looks like pepper flakes. It often turns red when it's wet. If the vet suspects another cause for your pet’s itching, they may order certain blood or skin tests to be sure. Your vet also makes sure that your dog or cat doesn’t have any open wounds. If a pet is itching or chewing on itself a lot, bacteria or yeast can get into the skin and cause an infection.

Step 2: Break the cycle. Putting an end to your pet’s flea allergy means getting rid of fleas. Though they're more common in warmer months, fleas can live year-round indoors. Once they lay eggs, new fleas hatch and then lay more eggs, which means your pet is constantly exposed.

Using year-round treatment with a flea preventative medication can help break the cycle and prevent future allergic reactions.

Topical medications and oral meds kill adult fleas. Talk to your pet’s veterinarian about which treatment is best for your pet.

Medication is only half the battle. Fleas don’t actually live on animals. They live in carpets, bedding, and other surfaces in your home and jump onto your pet to eat. That’s why it’s important to wash your bedding, your pet’s bedding, and your throw rugs with detergent and warm water.

To remove fleas, flea eggs, and larvae, vacuum your carpets, larger rugs, and chair and sofa cushions. Empty the vacuum bag or canister afterward. Make sure to do it outside, or they could get back into your living space.

You may also consider using a flea spray on your carpets and upholstered furniture. Be sure to keep your pets and your family away from sprayed areas until they’ve dried. Having fleas in teh home doesn't mean your house is dirty or that you are a bad pet owner. Fleas are attracted to food sources, which is any pet cat or dog.

Step 3: Ease the itch. Your pet’s veterinarian will recommend a topical, oral, or injected medication to ease your pet’s itching and inflammation. If your dog or cat has an infection, the veterinarian may also prescribe an antibiotic or antifungal medicine.
You may have heard that human antihistamines can treat pet allergies. The trouble is, they’re often not strong enough to ease inflammation for many pets with a flea allergy, and they don’t work at all for many animals. Talk to your vet before using them for your pet to determine the best solution and dosage if so.
At home, one of the easiest ways to help ease your dog or cat’s irritation is to give them a bath with cool water. Unless your pet hates water, this can help by making their skin feel better and removing some fleas.

Step 4: Avoid irritants. Don’t use flea shampoo or other topical flea products without talking to your pet’s veterinarian first. Flea shampoos and sprays can contain alcohol and other chemicals that can make a rash or open wounds worse!
You may have seen onion or garlic tablets marketed for pet flea relief, but they can be toxic to dogs and cats. Skip essential oils and products that contain them, too. This can cause further irritation to your pet's skin.

Step 5: Stay in touch with your pet’s veterinarian. Regular checkups are especially important for spotting infection and making sure your flea and allergy treatment plans are working.
If you have a question between scheduled visits, don’t hesitate to call your vet! It is always better to be safe than sorry. The longer something is put off because it doesn't seem serious, could end up something far worse while waiting. Early detection and treatment is of utmost importance.

---

Hear From Us Again

Don't forget to subscribe to our email newsletter for more recipes, articles, and clinic updates delivered to your inbox (here). Or, you can keep up to date by liking and following our Facebook page (here).

Related: We have more information under our cat health + dog health categories.