Therapy (often abbreviated tx, Tx, or Tx) is the attempted remediation of a health problem, usually following a diagnosis. In the medical field, it is usually synonymous with treatment (also abbreviated tx or Tx). Among psychologists and other mental health professionals, including psychiatrists, psychiatric nurse practitioners, counselors, and clinical social workers, the term may refer specifically to psychotherapy (sometimes dubbed 'talking therapy'). The English word therapy comes via Latin therapīa from Greek: θεραπεία and literally means "curing" or "healing".
Things have to be done fast in America, and therefore therapy has to be brief.
Gregory Bateson, Communication: The Social Matrix of Psychiatry, 1951, p. 148 as cited in: C.H. Patterson (1958) "Two approaches to human relations". in: American Journal of Psychotherapy. Vol 7.