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Why Does My Dog Keep Scratching? A Guide to Itchy Dog Skin

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April 9, 2025
4 min read
Why Does My Dog Keep Scratching?

Is your dog constantly scratching? While some scratching is normal for dogs, excessive scratching can be a sign of a problem. Recognising the signs early is important, as it can help prevent scratching from causing secondary complications like infections or a more serious skin condition, while also supporting your dog’s comfort and wellbeing.

This article will explore the common causes of itchy dog skin, including ways to prevent constant scratching in dogs and offer treatment options. If you are concerned about your dog's itching or see any signs of a skin condition, please consult your vet for a proper diagnosis.

In This Article

Dog Constantly Scratching: Common Causes of Itchy Skin in Dogs

Common causes of itchy skin in dogs include allergies, parasites, infections, and other underlying health conditions. Once your vet has identified the underlying cause of your dog's itchy skin, they can work with you to develop an effective treatment plan. Sometimes your vet may decide to treat symptomatically but identifying the cause of your dog's itchy skin is often important to providing effective treatment and ensuring long-term health.

Allergies that cause itchy skin

Dog allergies are a very common cause of itching. When a dog is allergic to something, their immune system overreacts to that substance. Potential causes of allergic skin disease or itchy skin in dogs include food allergies, reactions to things in the air like pollen, and reactions to things that touch their skin like shampoos, detergents or even products like lawn fertilisers.

My Dog Keeps Itching and Biting Himself: Are Parasites to Blame?

Parasites like fleas, ticks and mites can also cause intense scratching in dogs. Here's how each parasite can cause dogs to itch:

  • Fleas: Tiny insects that bite and feed on the dog's blood.
  • Ticks: These parasites attach to the skin and can transmit diseases.
  • Mites: Microscopic parasites that may live on or in the skin, causing irritation and hair loss.

If you suspect parasites in your dog, contact your vet and seek treatment.

Can These Underlying Health Conditions Cause Itchy Skin in Dogs?

Below are some underlying health conditions that can cause itchy skin in dogs.

  • Bacterial & Yeast Infections: Skin infections can cause irritation and lead to intense itching.
  • Hormonal Imbalances: Conditions like hypothyroidism (underactive thyroid) and hyperthyroidism (overactive thyroid) can cause skin problems. Hair loss is the most common sign but sometimes these conditions may cause itching.
  • Autoimmune Diseases: When the dog's immune system mistakenly attacks its own tissues, causing inflammation and, in many cases, itching.

Dog Constantly Biting and Scratching Himself but No Fleas?

While fleas are often the first suspect, there are many other reasons why your dog might be itchy. One often overlooked possibility is that anxiety or boredom could be contributing to the problem. Just like humans, dogs can experience anxiety and stress, which can manifest in physical ways, including excessive grooming and scratching. A dog dealing with anxiety might over-groom a particular area, sometimes to the point of causing hair loss or skin irritation.

How To Prevent Your Dog from Scratching

While some scratching is entirely normal, taking proactive steps can help keep your dog’s skin and coat in good condition. For example, regular dog grooming can help remove irritants by physically lifting away dirt, debris, allergens like pollen and dust, and loose hair that can accumulate on the skin and cause irritation.

Feeding your dog a complete and balanced diet is essential for skin health, providing the nutrients needed to support a strong skin barrier. If food allergies are suspected, your vet may recommend an elimination diet to help identify and manage triggers.

Reducing exposure to environmental allergens can make a big difference - frequent vacuuming, washing bedding, and wiping your dog’s paws after walks can help minimise contact with potential irritants. Finally, regular vet check-ups can help catch skin issues early and prevent more serious problems from developing. 

Treatment For Itchy Dog Skin and How to Soothe It

Treatment for itchy dog skin often involves addressing the underlying cause, which may require medication prescribed by your vet. This could include medications to address allergies, infections, or hormonal imbalances. Dietary changes, such as eliminating potential food allergens or feeding a hypoallergenic diet, may also be necessary. Additionally, modifying your dog's environment to minimise exposure to allergens can be beneficial. It's crucial to consult with your vet before starting any treatment plan.

Other management options may include switching to gentle, hypoallergenic shampoos, applying topical treatments like soothing creams and ointments, and implementing lifestyle changes. These lifestyle changes can include providing sufficient exercise to help reduce stress and promote overall wellbeing.

Dog Itching Remedies: At Home

If your dog is experiencing mild itchy skin, there are a few home remedies you can try to provide relief. A cool water rinse can soothe irritated skin and wash away potential allergens like pollen or dust and a soothing oatmeal dog shampoo may provide additional relief. You should also check your dog for fleas.

However, if your dog’s scratching is intense, persistent, or accompanied by redness, soreness, or hair loss, it’s best to consult your vet.

Conclusion

We’ve learnt that excessive scratching in dogs can stem from various factors, including allergies, parasites, infections, and underlying health conditions. To effectively address this issue, you should seek veterinary advice. Proactive measures to support skin health, such as regular grooming, a balanced diet, and routine check-ups with your vet can help prevent excessive scratching and other skin problems in dogs. If treatment is required then this often involves an all-around approach, including medications prescribed by your vet, dietary adjustments, and environmental changes. Home remedies like oat baths and cold compresses can provide temporary relief. With careful attention and the right approach, you can help your dog find relief from itchy skin.