APA style. APA Style is a writing style and format for academic documents such as journal articles and books. It is described in the style guide of the American Psychological Association (APA), which is titled the Publication Manual of the American Psychological Association.
A pain doctor, also called a pain specialist or pain management specialist, is a medical doctor (M.D.) or doctor of osteopathy (D.O.) who specializes in pain medicine.
A neurologist who specializes in head and facial pain is referred to as a headache specialist. These specialists diagnose and treat headache, migraine and face pain. A neuro-oncologist is trained to diagnose and treat patients with tumors in the brain and nervous system. A neuroimaging specialist has advanced skills in the use of tools that provide high-resolution images of the brain.