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.
However, if the pain and other symptoms persist for more than six to eight weeks in spite of these measures, your physician may order x-rays or an MRI and may refer you to a interventional pain specialist or a pain management specialist.