Why does my dog have recurring itchy bumps that turn into sores? | arlo.® Atlas
Share This Guide
Read time: 3 minutes
Overview
Recurring itchy bumps that turn into sores in dogs are often linked to an irritation that keeps being scratched, licked or rubbed, which can then allow a skin infection to develop. Common causes include allergies, insect bites, moist or dirty skin, contact irritation and, sometimes, a bacterial or yeast infection. It’s worth checking for patterns and keeping an eye on how quickly the skin changes.
Things To Check
1. Check whether the bumps appear after walks, grooming, swimming, playing in long grass or time in a muddy or dusty area.
2. Look closely for redness, heat, swelling, broken skin, scabs, discharge or an unpleasant smell.
3. Note whether your dog is scratching, licking, chewing or rubbing the same area repeatedly.
4. Check if the sores are appearing in one place, such as the belly, ears, paws, armpits or rump, or all over the body.
5. Think about any recent changes to food, bedding, shampoo, washing routine or cleaning products.
6. Look for signs of parasites such as fleas, flea dirt or small crusted spots, especially around the base of the tail and belly.
7. See whether the skin seems to get worse in warm, damp weather or after exercise when the coat stays wet for a while.
Common Causes
The most common cause is ongoing skin irritation, often from allergies or sensitivity to something your dog is coming into contact with. This can lead to itching, then broken skin, and then a secondary infection.
Parasites such as fleas or mites can also trigger very itchy bumps, and dogs may scratch them into sores quickly.
Bacterial or yeast skin infections are another common reason, especially when the coat is damp, the skin is already inflamed, or the dog has been licking one area for a while.
Less commonly, repeated sores can be linked to deeper skin conditions, hair follicle problems or a wound that keeps reopening because it is irritated.
What To Do
Try to keep a simple record of where the bumps appear, how often they come back and what seems to make them worse. A few photos can be helpful if the skin changes quickly.
Keep the area as clean and dry as you can without over-washing. If your dog is muddy or wet after exercise, dry the coat carefully and pay attention to skin folds, paws and under the collar.
Reduce licking and scratching if you can, since that often turns a small bump into a sore. A well-fitting collar or a vet-recommended recovery option may be useful if your dog keeps disturbing the area.
Check bedding, grooming tools and any areas your dog rests on for dirt, damp or irritants, and wash them regularly.
When To Contact A Vet
If the sores are spreading, keep coming back, smell unpleasant, ooze, or seem painful, it’s sensible to book a vet appointment. You should also get advice if your dog seems unwell, the itching is intense, or the skin problem is not improving with sensible home management.
Products That May Help
Helpful bathing and grooming routines may support day-to-day skin care, especially if your dog is getting dirty, greasy or damp between washes.
Related Questions
Why does my dog keep getting the same skin sore?
Can allergies cause itchy bumps on dogs?
How can I tell if my dog’s skin problem is infected?
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.