structural:expansion, structural:summarization
Regulation

Psychotherapists traditionally may be mental health professionals like psychologists and psychiatrists; professionals from other backgrounds (family therapists, social workers, nurses, etc.) who have trained in a specific psychotherapy; or (in some cases) academic or scientifically trained professionals. Psychiatrists are trained first as physicians, and as such they may prescribe prescription medication; and specialist psychiatric training begins after medical school in psychiatric residencies: however, their specialty is in mental disorders or forms of mental illness. Clinical psychologists have specialist doctoral degrees in psychology with some clinical and research components. Other clinical practitioners, social workers, mental health counselors, pastoral counselors, and nurses with a specialization in mental health, also often conduct psychotherapy. Many of the wide variety of psychotherapy training programs and institutional settings are multi-professional. In most countries, psychotherapy training is completed at a postgraduate level, often at a master's degree (or doctoral) level, over four years, with significant supervised practice and clinical placements. Mental health professionals that choose to specialize in psychotherapeutic work also require a program of continuing professional education after basic professional training.