Some may ask why do you need to see a psychiatrist as opposed to a psychologist. From the Canadian Psychiatric Assoc. website this article
How does a psychiatrist differ from a psychologist?
Psychiatrists are licensed physicians with extensive medical training in the causes, diagnosis, treatment and ongoing care of mental disorders. Their medical training allows psychiatrists to understand the interaction between the physical, social and psychological aspects of mental disorders. This training allows psychiatrists to appropriately prescribe medication, to provide psychotherapeutic treatments, and to work with patients, especially those with chronic or episodic conditions, to improve their quality of life.
According to the Canadian Psychological Association, "Psychology is the study of the biological, cognitive, affective, social and cultural aspects of behaviour. That is to say, psychologists are concerned with how people think, feel and behave in their social and physical environments." Psychologists apply their training in many arenas; some focus on the neuropsychological functioning of the brain, others on organizational behaviour. PhD clinical psychologists have received additional supervised training in, among other skills, psychological testing and providing psychotherapy treatments for mental illnesses. Psychiatrists often work hand-in-hand with psychologists in the care of a patient.