Why is my dog itching and scratching a lot?
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Overview
If your dog is itching and scratching a lot, lice are one possible cause, but they’re not the only one. Fleas, dry skin, allergies, skin irritation and other parasites can all look similar at first.
The main thing is to check the coat and skin carefully, note where the itching is happening and look for anything unusual in the environment or on other pets.
Things To Check
1. Check whether the itching is all over the body or mainly around the neck, back, rump, ears or belly.
2. Look closely for redness, scabs, broken skin, dandruff, bald patches or a dirty-looking coat.
3. Part the coat and inspect the skin for tiny moving insects, eggs or flea dirt, especially along the back and around the base of the tail.
4. See whether the scratching started after contact with another dog, a kennel, a grooming visit or a walk in places where other dogs go.
5. Check whether any other pets at home are scratching too.
6. Notice if your dog is biting, chewing, rubbing against furniture or rolling more than usual.
7. Think about any recent changes in food, washing products, bedding, grooming routine or household cleaning products.
Common Causes
Lice can cause intense itching, coat irritation and general discomfort. You may sometimes spot the insects or their eggs, but they can be hard to see without a careful look.
Fleas are another very common cause and can look similar to lice-related irritation. Even if you do not see fleas, they can still be present.
Dry skin or coat irritation can also make dogs scratch, especially in colder weather or after more frequent washing.
Allergies to food, pollen, dust or contact irritants may lead to ongoing scratching, licking or rubbing.
Other skin problems such as bacterial or fungal irritation can sometimes develop after scratching starts, making the itchiness worse.
What To Do
Gently part the coat and inspect the skin in good light. A fine-toothed comb can help you look for visible parasites and debris.
Keep a note of where the itching is happening, when it started and whether anything seems to make it worse. This can be helpful if you need to speak to a vet later.
Wash bedding regularly and vacuum areas your dog uses often, especially if you suspect parasites may be involved.
Avoid using random treatments from around the house, as some can irritate the skin further or be unsuitable for dogs.
If the itching is mild and your dog otherwise seems well, monitor the skin for a short period and watch for any new redness, scabs or hair loss.
When To Contact A Vet
Speak to your vet if the itching is severe, keeps coming back, is spreading, or your dog has sore skin, hair loss, scabs or signs of infection. It’s also sensible to get advice if more than one pet is affected, or if you suspect lice but you’re not sure what you’re seeing.
Your vet can help confirm the cause and suggest the most appropriate way to manage it.
Products That May Help
If your dog has skin or coat irritation, gentle grooming and routine washing can sometimes help you keep a closer eye on the coat and spot changes early.
Related Questions
How can I tell if my dog has fleas or lice?
Why is my dog scratching more at night?
Can lice spread between dogs?
Atlas is here to support owners with practical, easy-to-understand guidance. It is not a substitute for professional veterinary advice. If you're concerned about your animal's health, symptoms worsen, or something doesn't feel right, contact your vet.