Psychological medicine is a field that involves the study and treatment of mental illness, and there are numerous synonyms for this term. Some common synonyms include psychiatry, mental health care, psychotherapy, mental wellness, and behavioral health. Psychiatry refers specifically to the branch of medicine focused on diagnosing and treating mental illness. Mental health care is a broad term that encompasses all aspects of psychological treatment, from diagnosis and therapy to medication management. Psychotherapy is another term that refers to a range of therapeutic techniques used to treat mental illness. Mental wellness emphasizes the importance of preventing mental illness and promoting mental health. Behavioral health focuses on the impact of behavior on overall mental health and well-being.