A hot spot is an acutely inflamed, often moist and painful area of skin that can enlarge quickly when a dog keeps licking, chewing, or scratching it[cite: 13]. Allergies, fleas, ear problems, moisture trapped in the coat, anal-area irritation, and other itchy conditions can start the cycle[cite: 13]. Treating the visible sore without finding the trigger makes recurrence more likely[cite: 13].
What a Hot Spot Can Look Like
The area may be red, warm, moist, hairless, sticky, or crusted[cite: 13]. Dogs often focus intensely on it, and a small lesion can become much larger through self-trauma[cite: 13]. Thick coats can hide the true size of the problem[cite: 13].
Common Triggers
- Flea bites or other parasites[cite: 13].
- Environmental or other allergies[cite: 13].
- Wet coat after swimming or bathing[cite: 13].
- Ear irritation that scratching near the neck or cheek[cite: 13].
- Rear-end irritation that triggers chewing near the tail[cite: 13].
- Mats that trap moisture close to the skin[cite: 13].
First Priority: Stop Self-Trauma
Licking and chewing perpetuate inflammation[cite: 13]. A correctly fitted Elizabethan collar or other veterinary-approved barrier can protect the area while you arrange care[cite: 13]. Avoid tight wraps over moist lesions because trapped moisture can worsen the environment[cite: 13].
Keep the Area Clean and Dry
For a very small superficial lesion that your dog allows you to handle, gentle cleaning may help[cite: 13]. However, hot spots can be extremely painful, and clipping hair close to inflamed skin can injure a moving dog[cite: 13]. Large, painful, oozing, or rapidly spreading lesions are better handled professionally[cite: 13].
When Veterinary Treatment Is Needed
Seek veterinary care when the lesion is painful, enlarging, producing pus or significant discharge, failing to improve, or accompanied by lethargy or fever[cite: 13]. Recurrent hot spots need investigation for allergy, parasites, ear disease, or another underlying trigger[cite: 13].
Prevention
Use veterinarian-recommended parasite prevention, dry thick coats thoroughly after swimming, prevent matting, monitor recurring ear and skin problems, and address allergies when present[cite: 13]. Regular coat checks help catch moist or inflamed areas before they expand[cite: 13].
Related Virixoo Guides
If the lesion is near an irritated ear, see Why Does My Dog Shake His Head?[cite: 13].
Sources & References
Cornell University's hot spots guide explains the role of moisture, parasites, allergies, licking, and secondary infection in acute moist dermatitis[cite: 13].
FAQ
Are hot spots contagious?
A typical hot spot itself is not generally considered contagious, but some underlying skin problems can have infectious or parasitic causes, so diagnosis matters[cite: 13].
Can I cover a hot spot with a bandage?
Occlusive covering can trap moisture[cite: 13]. Ask your veterinarian before bandaging an inflamed skin lesion[cite: 13].
Why does my dog keep getting hot spots?
Repeated episodes suggest that an underlying trigger such as allergy, parasites, ear disease, or chronic moisture has not been fully controlled[cite: 13].
Bottom line: Stop licking, keep the area appropriately clean and dry, and investigate the trigger[cite: 13]. Rapidly spreading or painful hot spots deserve veterinary care rather than repeated home treatment[cite: 13].
