If a dog has pimples and scabs on its head, it is most likely caused by fungal infection. Scabs form on the skin and are scaly. The dog shows severe itching and scratches the affected area frequently.

At this time, the owner needs to use scissors to trim the hair of the affected area, expose it, cover it with warm wet paper towels, clean it after softening, then disinfect it with diluted hydrogen peroxide, and finally apply antifungal ointment. And wear an Elizabethan collar to prevent the dog from scratching and licking.