Psychiatric mental health nursing is a specialty within nursing. Psychiatric mental health registered nurses work with individuals, families, groups, and communities, assessing their mental health needs. Nurses in this area receive specific training in psychological therapies, building a therapeutic alliance, dealing with challenging behavior, and the administration of psychiatric medication. Mental health nurses can work in a variety of services, including: Child and Adolescent Mental Health Services (CAMHS), Acute Medical Units (AMUs), Psychiatric Intensive Care Units (PICUs), and Community Mental Health Services (CMHS). The PMH nurse develops a nursing diagnosis and plan of care, implements the nursing process, and evaluates it for effectiveness. Psychiatric Mental Health Advanced Practice Registered Nurses (PMH-APRNs) offer primary care services to the psychiatric-mental health population. PMH-APRNs assess, diagnose, and treat individuals and families with psychiatric disorders or the potential for such disorders using their full scope of therapeutic skills, including the prescription of medication and administration of psychotherapy. PMH-APRNs often own private practices and corporations as well as consult with groups, communities, legislators, and corporations. The practice of the psychiatric-mental health nurse (PMHN) as a Clinical Nurse Specialist or Nurse Practitioner is considered an advanced specialty in nursing.