My Dog Likes To Bite/Scratch Himself Continually. Why? What Can I Do?
Your dog could be having a skin irritation from an allergy or external parasite infestation. If left untreated, your dog may develop severe secondary bacterial and/or fungal infections.
Bring your dog to a veterinarian as soon as possible - this problem should be easy to detect and easily cured. If left untreated, your dog could suffer from severe hair loss and nasty sores. In the case of a major outbreak of fleas, you and other human family members could catch it too.
Do not self-medicate your dog! Please consult a vet.