A psychologist is an individual who holds a doctoral degree in psychology and is licenced or certified to furnish psychological diagnosis and treatment to patients. A psychologist can help people with stress relief, as well as coping with chronic back or neck pain. He or she can also treat depression, which is fairly common for patients suffering from chronic pain. A psychologist is limited in the extent of treatment, since a psychologist can provide counselling and behavioural therapy but cannot prescribe medication.

"Spine-Health.com - Psychologist Definition" (http://www.spine-health.com/glossary/p/psychologist)