Your dog needs to be examined by a veterinarian since it has been 2 days and he is getting worse. I am also concerned that your dog is not eating and drinking normally. Dehydration and decreased calorie intake can lead to secondary complications and slower wound healing. A thorough examination of the wound and a neurological evaluation need to be performed. It is possible a puncture wound has led to an infection over the head. This could also be soft tissue swelling or bruising. Your veterinarian will prescribe appropriate and safe anti-inflammatories and pain medication for your dog.
