psychiatric

adj. of psychiatry, of the diagnosis and treatment mental illnesses

Psychiatry is a branch of medicine which exists to study, prevent, and treat mental disorders in humans. The art and science of the clinical application of psychiatry has been considered a bridge between the social world and those who are mentally ill. Both its research and clinical application are considered interdisciplinary. Because of this, various subspecialties and theoretical approaches exist in psychiatric research and practice.  Psychiatrists can be considered physicians who specialize in the doctor-patient relationship who utilize some of medicine's newest classification schemes, diagnostic tools and treatments.
See more at Wikipedia.org...

Psy·chi·at·ric adj. Of or relating to psychiatry. psychiatric adjective Pertaining to psychiatry, mental disorders [more]Psychiatric - Community and Resources

Adjective
1. relating to or used in or engaged in the practice of psychiatry; "psychiatric disorder"; "psychiatric hospital"
(synonym) psychiatrical
(pertainym) psychiatry, psychopathology, psychological medicine

(a.)
Of or pertaining to psychiatria.