Why Is My Dog Scratching? 10 Common Causes of Itchy Skin in Dogs
Occasional scratching is normal for dogs, but when the itching becomes constant, it’s usually a sign of an underlying issue. Common causes include fleas, food allergies, parasites, infections, dry skin, and even stress or boredom. The good news is that once you identify the trigger, there are natural ways to relieve your dog’s discomfort, from improving their diet to using gentle, hypoallergenic grooming products like our soothing oatmeal dog shampoo.
Scratching is a common behavior in dogs but how do you know when their scratching could be caused by a more serious condition?
The Top 10 Reasons Causing Your Dog To Excessively Scratch
Allergies in Dogs
Not many people realise but although dogs and cats exterior looks have changed over the thousands of years they’ve been around, their anatomies have not changed at all. Which means they still require a primarily carnivorous diet (completely carnivorous for felines). You'll be hard-pressed to find a dog that wouldn't love to be given a fresh roo rack or fresh chicken necks to devour.
Kibbles (dry pet foods) are made up of primarily everything that cats and dogs are not meant to eat and most certainly not designed to thrive on. They are filled with high allergen ingredients like corn, grains, potato, rice, wheat, cereal, and tapioca which are used as cheap bulking agents. Some meat by-products are chucked in to give the kibble a meat flavour and the manufacturer is also able to label it with that meat by-product to fool people into thinking it is the primary ingredient.
In short, while your pet is resilient and can survive on these carbohydrate based ingredients as their diet, their body is constantly trying to break it down to get what little they can from it nutritionally. Eating this way means a lot of pets will face a food allergy in their lifetime and it will not go away unless their diet is changed to be more biologically appropriate.
Fleas
Specific mention needs to be given to fleas, given this is the first thing that comes to mind for many pet owners, and not without warrant! These pesky pests are a nuisance given how easily they can transfer from pet to pet, and pet to human. Fleas are a common cause of itching in dogs and can cause redness, inflammation, and skin irritation. Fleas can spread quickly, so it's important to properly identify and treat any flea infestations as soon as possible.
Other Parasites (Mites, Ticks, Ringworm)
Aside from fleas, other parasites such as mites and ticks, or ringworms, can cause a dog to itch and can often create a skin infection if left untreated.
Mites can cause mange, which is an inflammation of the skin that can cause skin irritation, itching, and hair loss in dogs. It is caused by microscopic mites that burrow into the skin, lay eggs, and feed on the skin cells and oils. Mange is highly contagious, and can spread quickly between dogs. Treatment usually involves a combination of topical and oral medications.
Ticks can transmit a number of bacterial, viral, and protozoal infections to dogs, which can cause a variety of health problems, including skin infections, fever, lethargy, and joint pain. In severe cases, tick-borne infections can be fatal. Additionally, ticks can cause severe allergic reactions in some dogs, leading to itching, inflammation, and hair loss.
Ringworm is a contagious skin infection caused by a fungus. It is most commonly seen as a ring-shaped rash on the skin of dogs and can cause itching, hair loss, and crusty or scaly patches of skin. It is spread through direct contact with an infected animal, and through contact with contaminated bedding, grooming tools, and other objects. Treatment for ringworm in dogs typically involves topical and/or oral antifungal medications.
Parasites can spread quickly, so it's important to properly identify and treat any skin parasites as soon as possible.
Dry Skin
Dry skin can occur in dogs due to a lack of moisture and can be caused by environmental factors such as cold temperatures, low humidity, or a lack of fatty acids in the diet. Dry skin can manifest as redness, flaking, and itching. Our raw dog food meals are ideal for promoting healthy skin in dogs as our meals contain appropriate levels of healthy fats. You may find an omega supplement for dogs can also help improve dry skin.
Anxiety or Stress
Anxiety or stress can cause a dog to itch due to the release of hormones in the body that trigger the release of histamine. This can cause inflammation in the skin and lead to itching. Additionally, dogs can lick or chew on their skin as a way to self-soothe when they are feeling anxious, which can lead to further skin irritation and itching. cause a dog to become agitated and itch to relieve the tension. Stress and anxiety is often caused by changes in the environment, fear of unfamiliar situations, or separation anxiety.
Slow feeder dog bowls and mats are a great way to help reduce a dog's anxiety, as it encourages the dog to lick their food up which releases other kinds of hormones that promote relaxation!
Boredom
Dogs need both mental and physical stimulation. Without it, they can become restless and develop behaviours like constant scratching, chewing, or licking as a way to release energy. What looks like itchy skin may actually be your dog trying to self-soothe or occupy themselves.
To prevent boredom-related scratching, make sure your dog has regular exercise suited to their breed and age. Daily walks, playtime, and training sessions are essential. Mental enrichment is just as important as physical activity. Puzzle toys, slow feeder bowls, lick mats, and interactive games can help keep your dog’s brain engaged and reduce unwanted scratching.
Sometimes, simply rotating their toys or introducing new activities like scent work or agility can make a huge difference in keeping them mentally stimulated. A tired, engaged dog is far less likely to scratch out of boredom.
Infections
Skin infections are a common but serious cause of itching in dogs. Both bacterial and fungal infections can trigger redness, irritation, and inflammation that leads to constant scratching. These infections often develop as a secondary issue — for example, when a dog already has allergies, parasites, or damaged skin that allows bacteria or yeast to grow.
- Signs of a skin infection can include:
- Persistent scratching or licking
- Red or inflamed skin
- Pustules or sores
- Foul odour from the skin
- Oily or greasy patches of fur
- Hair loss in affected areas
If you suspect a skin infection, it’s important to see a veterinarian. Left untreated, infections can spread and cause significant discomfort. Treatment usually involves medicated shampoos, topical creams, or oral medication depending on the severity.
Supporting your dog’s immune system through diet also plays a role. A fresh, raw diet helps improve skin resilience and reduce the risk of recurring infections by avoiding common allergens and fillers found in processed kibble.
Excessive Grooming
Have you ever noticed that after a dog wash, your dog may first roll in the dirt or find something to rub itself against?
Dog cleaning products may contain ingredients that are irritating to your dog's skin, causing excessive itching. Excessive grooming can also cause a dog to itch due to the friction of the fur against the skin.
You can reduce skin irritation from grooming by opting for natural dog grooming products that are hypoallergenic and free from synthetic chemicals and irritating ingredients. A soothing oatmeal shampoo for dogs is a great option.
Pain or Discomfort
When a dog is experiencing pain or discomfort from an underlying health condition, he or she may start itching in an attempt at relief. This can be caused by arthritis, hip dysplasia, or other underlying medical conditions. If there are no visible signs of skin conditions and you've ruled out any other potential factors above, it's important to seek advice from a vet to get a potential diagnosis.
Over Excitement
Some dogs scratch or itch when they are overly excited. This behaviour is often mistaken for a skin problem, but in many cases it is linked to energy and stimulation levels. Over excitement can trigger your dog to scratch, lick, or nibble at their skin as a way to release pent-up energy. You may notice this happens after playtime, when new people arrive at the house, or during other high-energy situations.
Dogs that do not get enough daily exercise are more prone to scratching from excitement because they are already carrying extra energy that needs an outlet. Too much stimulation, such as rough play or long periods of excitement, can also make the behaviour worse.
To manage scratching caused by over excitement, focus on providing your dog with regular, balanced exercise and opportunities for calm activities as well. Mental stimulation, such as puzzle feeders, training sessions, or scent work, can help burn energy in a healthier way. Teaching your dog to settle after play and reinforcing calm behaviours can also reduce excessive scratching.
If your dog is scratching when excited but does not show any other signs of itchy skin or irritation, it may simply be behavioural. However, if the scratching becomes constant or is paired with redness, sores, or hair loss, it is best to rule out medical causes such as allergies, parasites, or infections.
Frequently Asked Questions About Dog Scratching
Why Is My Dog Scratching but Has No Fleas?
If your dog is scratching but you cannot find fleas, the cause may be food allergies, environmental allergies, dry skin, anxiety, or even a skin infection. Fleas are common, but not the only trigger.
What Can I Give My Dog for Itchy Skin?
The best first step is to identify the cause. Natural options that can help include an omega supplement to support skin health, switching to a raw diet to reduce allergens, or using soothing oatmeal shampoo for dogs. If itching is severe or persistent, consult your vet.
When Should I Take My Dog to the Vet for Scratching?
See a veterinarian if your dog’s scratching is constant, leads to sores, hair loss, redness, or if you notice signs of infection. A vet can rule out parasites, allergies, or underlying conditions that need treatment.
Helping Your Dog Find Relief From Itchy Skin
Excessive scratching can have many different causes, from allergies and parasites to boredom or stress. The key is to identify the underlying issue early and take steps to address it. Simple changes like switching to natural grooming products, providing more stimulation, or improving your dog’s diet can make a huge difference. If scratching persists or you suspect infection, always seek advice from your veterinarian. With the right care, most dogs can find lasting relief from itchy skin and get back to feeling comfortable and happy.
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If you’re ready to give your dog lasting relief, try switching to a fresh raw diet or soothing them with our all-natural grooming range.