Headache Medicine is a subspecialty of neurology and is concerned with the diagnosis and treatment of head and face pain. Patients affected by headache and face pain may seek help from multiple specialty areas. These include primary care (family practice, general internal medicine), and specialty care. Specialty care includes, but is not restricted to, neurology, neurosurgery, otolaryngology, physical medicine and rehabilitation, oromaxillofacial surgery, and psychiatry. For headache and face pain, the practitioner of Headache Medicine is often the principal care physician. They may render all levels of care commensurate with his or her training.