Top 5 Causes of Itching in Dogs: Causes & Solutions

Itching is one of the most common symptoms in dogs, but pinpointing the exact cause can be tricky. This guide explores the top five reasons your dog may be itching and advises when veterinary support is needed to best care for your canine companion.

How to Recognise Itching in Your Dog

Itching can show in various ways beyond just scratching. Some dogs lick affected areas intensely, leading to orange-brown saliva stains, especially on lighter coats. Chewing often targets paws, but may extend to the groin, backside, or knees. Others will rub or scratch against carpets, furniture, or the ground using their head, ears, or body. Awareness of these signs is the first step to helping your dog find relief.

1. Parasites

Parasites are the leading cause of canine itching. Fleas are the most common and can cause severe discomfort, especially if your dog is allergic to flea saliva. Prevention with prescribed flea treatments from your vet is essential, as infestations are costly and time-consuming to eradicate.

Mites may also cause intense itching but are harder to detect, often requiring a vet’s diagnosis. Sarcoptic mange (fox mange) is contagious and can even affect humans. Demodectic mange affects hair follicles causing hair loss. Harvest mites are less common but cause intense irritation. Lice infestations are rare and usually spotted early, predominantly in crowded environments like kennels.

2. Pain Misinterpreted as Itching

Sometimes dogs lick or chew painful areas such as surgical sites or arthritic joints. This behaviour redirects discomfort but looks like itching to owners. For instance, persistent chewing around the backside could be linked to painful anal glands or infections requiring a vet visit.

3. Skin Infections and Secondary Irritations

Bacterial and yeast infections can cause severe itchiness, often in moist or skin fold areas such as groin, armpits, or facial folds. Bulldogs, basset hounds, and overweight dogs with skin folds are prone to yeast infections that emit a characteristic odour.

Surface infections might be resolved with medicated shampoos, but deeper infections commonly need extended antibiotic courses. Hot spots, or localized infections, are frequently itchy and benefit from topical creams along with veterinary guidance.

4. Food Allergies and Sensitivities

Approximately 5-10% of dogs suffer from food allergies causing itching, recurrent infections, or hair loss. Common allergens include beef and dairy products. Dogs must have been exposed to the allergen before developing a reaction, so frequent dietary changes without vet guidance can limit their diet options unnecessarily. Consulting your vet is important to perform a proper diet trial and diagnosis.

5. Atopy (Environmental Allergies)

Atopy affects around 15% of dogs in the UK, with breeds such as Labradors, West Highland Terriers, Boxers, and French Bulldogs commonly affected. Canine atopy involves allergic reactions to pollens, dust mites, and weeds that are hard to avoid, making this a chronic condition. Diagnosis is made once other causes are excluded, sometimes aided by blood or skin tests.

When Should You See the Vet?

If your dog’s itching is persistent or severe, a vet consultation is essential. Many causes overlap or have secondary infections needing professional treatment. Early diagnosis improves your dog’s comfort and reduces the risk of skin damage.

Summary of Itching Causes and Care

Responsible Pet Ownership

Preventive care such as regular parasite control, balanced nutrition, and early vet visits can make a significant difference in your dog’s comfort and health. When looking for a new dog, find a reputable breeder or consider adoption through responsible channels. This helps promote healthy, happy pets with reduced risk of inherited or acquired diseases.