Hot spots on dogs are also referred to as acute moist dermatitis. They most often appear on a dog's head, chest or hind end. There are many reasons that these lesions form, so it's important that all pet owners know how to treat hot spots on a dog.
Anything that irritates your dog's skin will cause him to scratch and chew to relieve himself. While scratching can create lesions on the skin, chewing can be even worse. The moisture left behind festers on the skin and in the fur.
When your dog chews insistently at the same spot, that moisture can cause a hot spot. The hot spot will be itchy, resulting in more chewing, and the issue will quickly spread.
It's a vicious cycle.
Check out the full guide as well as video instruction here: Top Dog Tips