Why is my dog losing fur from constant scratching? | arlo.® Atlas
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Overview
If your dog is losing fur because they're scratching constantly, the usual cause is skin irritation. Allergies are common, but fleas, dry skin, infections and contact irritation can also lead to itching and hair loss. You can often do a useful first check at home, but it's not always possible to tell the exact cause just by looking.
Things To Check
1. See when the scratching is happening. If it starts after walks, grooming, meals, bedding time or time outdoors, that can give a clue.
2. Look closely at the skin for redness, small bumps, broken skin, scabs, swelling or areas that feel warmer than usual.
3. Check for fleas or flea dirt, especially at the base of the tail, around the rump and along the belly.
4. Notice where the fur loss is worst. Patches on the paws, ears, belly, armpits or rump can suggest different triggers.
5. Think about any recent changes, such as a new food, shampoo, detergent, bed, field, grooming product or seasonal pollen exposure.
6. Check whether your dog is also licking, chewing, rubbing their face, shaking their head or scooting, as this can go along with itchy skin.
7. Look at the coat condition overall. A dull coat, dandruff or greasy skin can sometimes sit alongside ongoing skin irritation.
Common Causes
Allergies are one of the most common reasons for repeated scratching and fur loss. These may be linked to food, pollen, dust, grass or something that has touched the skin.
Fleas are another very common cause, and some dogs react strongly even if you only spot a few signs. Mites or other parasites can also make a dog very itchy.
Dry skin, harsh shampoos, over-washing or environmental irritation can also leave the skin uncomfortable and prone to scratching.
Sometimes scratching starts because of a skin infection, which can develop after the skin has already become irritated. Bacterial or yeast overgrowth can make the itching cycle worse.
Less commonly, fur loss may be linked to hormone or other medical issues, especially if the coat is thinning more widely rather than in obvious scratch marks.
What To Do
Keep a simple note of when the itching happens, where the fur loss is, and whether anything seems to make it better or worse. This can be very helpful if you need to speak to your vet later.
Use a gentle routine and avoid switching between lots of shampoos or grooming products, as that can make irritated skin harder to settle.
Check bedding, blankets and sleeping areas, and wash them regularly if they seem to be making the skin worse. If you suspect something in the environment is irritating your dog, try to reduce exposure where you can.
Try to stop the skin from getting more damaged through constant scratching or chewing. If the skin is sore or broken, gentle monitoring and keeping the area clean and dry can help you avoid extra irritation.
If the itching keeps coming back, the fur loss spreads, or you can't find an obvious reason, it’s sensible to get proper veterinary advice rather than guessing.
Products That May Help
For dogs with itchy skin, grooming concerns or general coat care needs, the Pet Care collection may be useful as part of a calm at-home routine.
Related Questions
Why is my dog scratching more at night?
Can allergies cause patchy fur loss in dogs?
How do I tell if my dog has fleas or skin allergies?
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.