Why does my dog get hot spots in warm weather? | arlo.® Atlas
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Overview
Hot spots can seem to appear out of nowhere in warm weather, but heat, moisture and itching often create the right conditions for them to flare up. Your dog may be licking, scratching or rubbing a small area until the skin becomes sore and inflamed. There can be several possible causes, so it’s best to look at the pattern rather than assume one single reason.
Things To Check
1. Check whether the problem starts after exercise, swimming, grooming, or time outside in the heat.
2. Look closely for redness, wet skin, broken skin, scabs, a bad smell or discharge.
3. See if your dog is licking, chewing or scratching one area more than the others.
4. Part the coat to check whether the skin underneath is damp, matted or trapped under thick fur.
5. Check for signs of fleas, other bites, or general itchiness elsewhere on the body.
6. Think about any recent changes in shampoo, grooming routine, bedding, diet or outdoor exposure.
7. Note whether the area seems painful, warm to touch or is getting bigger over a short time.
Common Causes
The most common reason is a simple itch that turns into a sore patch because the dog keeps licking, scratching or rubbing it. Warm weather can make this worse by increasing sweating in the coat, trapping moisture after swimming or washing, and making the skin feel more irritating overall.
Fleas, insect bites, grass irritation and other minor skin triggers can also set off the cycle. If the coat stays damp or matted, the skin underneath can stay warm and sore for longer, which may make the area easier to inflame.
Less commonly, there may be an underlying skin problem such as allergies, ear discomfort, or another cause of itchiness that keeps coming back. In those cases the hot spot is usually a sign that something else is bothering your dog too.
What To Do
Keep the area clean and dry, and stop your dog from worrying it if you can. Gentle grooming to remove trapped moisture or loose coat around the area may help you keep an eye on it more easily, but avoid rough brushing over sore skin.
Try to notice what seems to trigger the flare-up, such as heat, swimming, muddy walks or grooming. A simple diary of when it starts and what your dog had been doing beforehand can be very useful.
Keep bedding clean and dry, and make sure your dog has a cool place to rest during warmer spells. If the same area keeps flaring up, or if your dog seems itchy in general, it’s sensible to speak to your vet about possible underlying causes.
When To Contact A Vet
Contact your vet if the hot spot is spreading quickly, looks very painful, smells strong, has discharge, or your dog seems unwell. It’s also worth getting advice if the skin isn’t improving, keeps coming back, or your dog is repeatedly scratching or licking the same area.
Products That May Help
If your dog’s skin tends to get irritated in warmer weather, a few everyday grooming and hygiene basics can help you keep on top of coat care and skin checks at home.
Related Questions
Why is my dog licking one spot all the time?
Can warm weather make dog skin allergies worse?
How do I keep my dog’s coat clean without irritating sore skin?
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.