They ARE hot spots. Not burns from contact (assuming collar is being used correctly), not allergies but irritation from friction which can be from the collar being too loose, and /or dirt that can get between the contacts points and skin. Dogs that tend to have sensitive skin are more apt to get them. Sometimes they out grow it as they mature, sometimes not. Bark collars can cause them too. Hot spots heal pretty quickly. You can shave the hair or not, wash with a antiseptic soap, rinse and dry thoroughly. Apply a topical antibiotic, betadine or yes, gold bond powder. Try to keep them from scratching and watch for a secondary infection. In the future, rotate the side collar is wore on throughout the day, remove it when you rotate and clean off the prongs, and use the shorter prongs. You can also take a sock, cut off the toe, roll it back so tube is double thickness and slide collar through so that it acts as a buffer between the prongs and neck area during longer wear like hunting. I have one girl who is 8 and she gets at least one a year during hunting season.