Hot spots are one of the most common skin problems seen in dogs, especially in warm and humid weather. These painful, moist, inflamed skin lesions can appear quickly and become much worse within a day or two. Dogs with hot spots often lick, chew, or scratch the area constantly, making the skin red, raw, and infected. Dr. Roger Hart at Bushnell Animal Clinic explains what hot spots are, what causes them, and when veterinary care is needed.