Have you ever spotted your dog itching in the morning, only to find a large, angry-looking sore by evening? Chances are your dog has a hot spot. While these skin lesions can look alarming, prompt care and sometimes a visit to your veterinarian can usually get your dog feeling much more comfortable in no time.
What Is a Hot Spot?
A hot spot, also called acute moist dermatitis or pyotraumatic dermatitis, is a red, inflamed, painful area of skin that develops when a dog repeatedly licks, chews, or scratches the same spot. These sores often ooze fluid, may have an unpleasant odor, and can sometimes become infected. They most commonly develop on the head, neck, hips, and legs, although they can occur anywhere on the body.
Hot spots are especially common in dogs with thick or long coats, such as golden retrievers, German shepherds, and Newfoundlands, because dense fur can trap moisture and heat against the skin.
Why Do Hot Spots Develop?
The biggest culprit is the itch-scratch cycle.
Something makes your dog itchy—a flea bite, allergy, ear infection, matted fur, or even an aching joint—so your dog scratches or licks the area, damaging the skin. That irritation makes the area itch even more, leading to even more licking and scratching. Before long, what started as a tiny irritation has become a painful, rapidly expanding sore.
Signs to Watch For
Hot spots often seem to appear “overnight.” You may notice:
- A red, moist, or oozing patch of skin
- Constant licking, chewing, or scratching
- Hair loss over the affected area
- A foul odor
- Pain when the area is touched
Sometimes the sore is hidden under thick or matted fur, so you may only notice that your dog is paying unusual attention to one spot.
What Should You Do?
The sooner you intervene, the easier hot spots are to treat.
Your first goal is to stop your dog from continuing to traumatize the area. Your veterinarian may recommend:
- An Elizabethan collar (cone) or other protective collar
- Covering the area when appropriate
- Medications to relieve itching and inflammation
- Treating any underlying infection or medical condition
Clipping the hair around the lesion is often an important part of treatment because it allows the skin to dry and makes topical medications much more effective. Your veterinary team may clean the area with an antiseptic solution, prescribe topical or oral antibiotics if infection is present, and provide medications to reduce inflammation and discomfort.
Can You Treat a Hot Spot at Home?
While very small hot spots may respond to early care, it’s best to have your veterinarian examine your dog—especially if the lesion is large, painful, foul-smelling, or continues to spread.
Avoid using human medications unless your veterinarian specifically recommends them. Some medications that are safe for people can be harmful to dogs.
Preventing Future Hot Spots
The best prevention is addressing whatever made your dog itch in the first place. Your veterinarian may recommend:
- Year-round flea prevention
- Allergy management
- Prompt treatment of ear infections
- Pain management for arthritis
- Regular brushing and grooming, especially for thick-coated breeds
- Bathing and thoroughly drying the coat after swimming
- Plenty of exercise and mental enrichment to reduce boredom-related licking
The Bottom Line
Hot spots may look dramatic, but they’re usually very treatable when caught early. Because they can grow surprisingly fast, don’t wait if you notice your dog obsessively licking or scratching one area or if you spot a red, moist lesion.
Early veterinary care not only helps your dog feel better sooner, it also prevents a small irritation from becoming a much bigger problem.
If you think your dog has developed a hot spot, contact your veterinary team. Together, you can identify the underlying cause, stop the itch-scratch cycle, and help keep your dog’s skin healthy and comfortable.
