What should I check if my dog has scabs, dandruff, and hair loss?
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Overview
If your dog has scabs, dandruff and hair loss, start by checking the skin closely for itching, redness, broken skin, parasites and whether the coat change is in one area or spread out. It could be something simple like dry skin or grooming irritation, but it can also happen with mites, allergies, infection or other skin problems, so it’s worth watching the pattern rather than guessing.
Things To Check
1. Check exactly where the scabs, flaking and hair loss are happening, whether it’s one patch, a few spots or across the body.
2. Look for itching, rubbing, licking, head shaking or scratching, especially if it seems worse at certain times.
3. Part the coat and look for redness, sore skin, heat, swelling, broken skin, discharge or a smell.
4. Check for tiny dark specks, moving parasites, flea dirt or crusting around the ears, belly, elbows, face and paws.
5. Note whether the skin looks dry and flaky or greasy and flaky, as that can point towards different common causes.
6. Think about any recent changes such as a new shampoo, more frequent washing, new bedding, seasonal shedding or time in long grass.
7. Check whether other pets in the home are itchy or losing fur, which can be a clue that the cause is shared.
Common Causes
Dry skin or coat change is one of the more common reasons for dandruff and mild flaking, especially after frequent washing or in drier weather.
Allergies can also cause itchiness, scabs from scratching and hair loss, often with red or irritated skin.
Parasites such as fleas or mites are another common possibility, especially if the skin is very itchy or the hair loss is patchy.
Skin infection can develop after scratching or if the skin barrier is already irritated, and that can cause scabs, smell, discharge and more hair loss.
Less commonly, hormonal or other skin conditions can contribute, particularly if the coat is changing more slowly over time or the problem keeps coming back.
What To Do
Make a note of where the problem is, how fast it’s changing and whether your dog seems itchy or sore. If you can, take clear photos every few days so you can spot small changes more easily.
Keep grooming gentle and avoid picking scabs or using human products on the skin. If you’ve recently changed shampoo, bedding or washing routine, consider whether that might be irritating the skin.
Check any other pets for similar signs and keep up with normal parasite control if it’s already part of your routine. If the skin is only mildly flaky and your dog seems well, short-term monitoring can help you understand whether it’s settling or spreading.
If the problem is persistent, getting worse, very itchy, smelly, sore or patchy, it’s sensible to ask your vet for advice.
When To Contact A Vet
Contact your vet if the skin is very itchy, the hair loss is spreading, the skin looks infected, or your dog seems uncomfortable. It’s also worth getting advice if other pets at home are affected, or if the problem doesn’t improve with sensible home monitoring.
Products That May Help
If your dog needs regular washing, coat care or gentle grooming support as part of a skin-care routine, this collection may be useful.
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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.