Dog Hot Spots: Causes and Treatment
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Hot spots can appear overnight and spread fast. Here's what triggers them and how to help your dog heal.
What a hot spot is
A hot spot, or acute moist dermatitis, is a red, raw, oozing patch of inflamed skin that can appear and grow quickly. They're often warm, painful, and intensely itchy. Dogs make them worse by licking and chewing the area.
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What triggers them
Anything that starts an itch can set one off: fleas, allergies, ear infections, matted or damp fur, or even boredom-driven licking. Once the skin is broken, bacteria move in and the cycle accelerates. Thick-coated and warm-weather dogs are especially prone.
Getting the itch under control
Because fleas and allergies are frequent triggers, consistent parasite prevention with a product like [NexGard Chewables for Dogs](/products/nexgard-chewables-for-dogs) helps, and dogs with allergic itch may need a vet-prescribed medication such as [Apoquel Tablets for Dogs](/products/apoquel-tablets-for-dogs). Treating the underlying itch is key to stopping recurrences.
First-aid basics
Gently trim the fur around the spot and keep it clean and dry so it can breathe. Stop the licking, often with an e-collar, since saliva keeps it inflamed. Avoid human ointments unless your vet approves them.
When the vet should treat it
Large, spreading, or very painful hot spots usually need veterinary care, which may include cleaning, medicated topicals, antibiotics, or anti-itch medication. Your vet will also hunt for the root cause. Prompt treatment prevents a small sore from becoming a big problem.
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Frequently asked
- What causes hot spots on dogs?
- They start with an itch, from fleas, allergies, moisture, or infections, then worsen as the dog licks and bacteria set in. Controlling the underlying itch prevents them.
- Can I treat a hot spot at home?
- You can trim the fur, keep it clean and dry, and stop the licking, but large or painful hot spots need a vet. Avoid human ointments unless your vet approves.