Overview
A nurse is a trained health professional who assesses, treats and supports people who are sick, injured, recovering or at the end of life. Nurses work alongside doctors and other health workers to deliver care, to educate patients and families, and to promote health in communities. They combine clinical skills, observation, communication and ethical judgement to keep people safe and to improve outcomes.
Core responsibilities
Nursing duties vary with role and setting but commonly include: taking histories and vital signs, administering medications and treatments, monitoring progress, coordinating care, documenting findings, and educating patients about self-care. Nurses also provide emotional support, help families with bereavement, and act as patient advocates when decisions about care are needed.
Education, licensure and career pathways
Preparation for nursing differs by country and by level of practice. Programs range from certificate courses for entry-level practical nurses to university degrees for registered nurses and postgraduate education for advanced practice nurses. Licensure or registration by a regulatory authority is required in most places. Specialized roles—such as nurse practitioners, clinical nurse specialists, and nurse anesthetists—require additional training and certification.
Common specialties and workplaces
- Acute care and medical-surgical units
- Pediatrics, obstetrics and neonatal care
- Surgical nursing and perioperative support, including roles that assist during surgery
- Mental health and psychiatric nursing
- Community, public health and school nursing
- Geriatrics, palliative care and hospice services
- Specialty clinics and outpatient care, including chronic disease education such as nutrition and disease management
History and development
Nursing evolved from unpaid caregiving and religious orders to a regulated profession with standardized education and science-based practice. Over time nursing adopted evidence-based methods, public health principles and expanded scopes of practice. Professional organizations and regulatory bodies now oversee standards, ethics and continuing education.
Importance and notable facts
Nurses make up a large proportion of the health workforce and are essential for safe, continuous care. Many health systems face nurse shortages, which has driven innovations such as travel nursing, team-based care, telehealth nursing and new roles to meet demand. Nurses increasingly lead quality improvement, infection control and health promotion efforts.
Current trends and challenges
Contemporary nursing is shaped by technology (electronic records, telemedicine), a focus on patient safety and interprofessional collaboration. Common challenges include workforce sustainability, burnout, equitable access to education, and adapting to demographic changes such as aging populations. Ethical issues—like end-of-life decisions and resource allocation—remain central to practice.
Why nursing matters
Nurses provide hands-on care, interpret clinical changes, teach and comfort patients, and coordinate complex care plans. Their role stretches from bedside procedures to community health promotion and policy advocacy. For many patients, nurses are the primary point of contact and an enduring source of support throughout illness and recovery.
