Medical Definition of Psychiatrist
Psychiatrist: A physician who specializes in the prevention, diagnosis, and treatment of mental illness. A psychiatrist must receive additional training and serve a supervised residency in his or her specialty. He or she may also have additional training in a psychiatric specialty, such as child psychiatry or neuropsychiatry. Psychiatrists can prescribe medication, which psychologists cannot do.
Last Editorial Review: 5/13/2016
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