That Itches! A Guide to Canine Hot Spots

Hot spots, or pyotraumatic dermatitis, are common in dogs during summer and result from excessive scratching or biting due to allergies, fleas, or other irritants. These red, pus-filled lesions are itchy, painful, and appear suddenly, quickly growing if untreated. While not life-threatening, hot spots can resemble deeper infections like pyotraumatic folliculitis or furunculosis, which require different treatment, making Veterinary consultation essential.

Treatment involves clipping the hair around the lesion, cleaning it, and applying topical antiseptics. In severe cases, sedation may be necessary. Updated 2025 guidelines recommend topical antimicrobial therapy as the first line of treatment, rather than oral antibiotics. To relieve itching and pain, veterinarians may prescribe medications like steroids, oclacitinib, or ilunocitinib.

Prevention is possible by managing underlying causes such as fleas, allergies, or anal sac disease. Understanding lesion location helps identify the root issue: cheek (check ears), back (look for fleas), and butt (check anal sacs). Early intervention ensures comfort and prevents recurrence.