Rehabilitation is a set of health interventions intended to improve functioning and reduce disability in people with health conditions, taking account of their environment. It encompasses physical, cognitive, psychological, and communication abilities rather than physical recovery alone. Within medicine, rehabilitation complements treatment by addressing how illness or injury affects everyday activities and participation. Its goals may include restoring abilities, maintaining existing function, or finding alternative ways to perform tasks. (who.int)
Functioning and disability
The World Health Organization provides a conceptual framework through the International Classification of Functioning, Disability and Health (ICF). Endorsed on May 22, 2001, this classification describes functioning in relation to body functions and structures, activities, participation, and environmental factors. It applies to individuals and populations and provides a common terminology across health-related disciplines. (who.int)
Within this framework, impairment concerns a problem in body function or structure; an activity limitation concerns difficulty performing a task; and a participation restriction concerns difficulty taking part in a life situation. These dimensions are related but not identical. The ICF also distinguishes capacity—what someone can do in a standardized environment—from performance in their usual surroundings. Environmental barriers or supports therefore form part of the description of functioning, rather than being treated as separate from it. (who.int)
The ICF complements the International Classification of Diseases, which classifies diseases and other health conditions. A diagnosis alone does not describe the full consequences of a condition for daily life; information about functioning adds a different dimension to clinical assessment and service planning. (who.int)
Conditions and goals
Rehabilitation serves people across the lifespan. Conditions associated with rehabilitation needs include stroke, brain injury, spinal cord injury, severe burns, limb amputation, arthritis, and weakness after serious illness. It can also follow major surgery or address difficulties associated with developmental conditions. The relevant functions may include movement, thinking, speech, swallowing, or bowel and bladder control. (medlineplus.gov)
Goals differ according to the abilities affected, the severity of the problem, and whether its cause is temporary or ongoing. Examples include dressing independently after a stroke, returning to exercise through cardiac rehabilitation, or improving activity and quality of life through pulmonary rehabilitation. People experiencing functional difficulties following cancer treatment may also receive rehabilitation. (medlineplus.gov)
Interventions and professional roles
Rehabilitation programmes commonly combine several approaches:
- Physical therapy addresses strength, mobility, and physical fitness.
- Occupational therapy addresses the performance of daily activities.
- Speech-language therapy addresses communication and may include swallowing difficulties.
- Cognitive rehabilitation addresses abilities such as memory, planning, learning, and decision-making.
- Assistive technology provides equipment or products that support functioning.
- Vocational rehabilitation addresses skills needed for work or schooling.
Other components may include pain treatment, mental health counselling, and nutritional counselling. The combination is determined by the individual's needs and goals rather than by a single standard programme. (medlineplus.gov)
Physical medicine and rehabilitation, also called physiatry, is a medical specialty concerned with functions affected by illness or injury. Rehabilitation teams may include physicians, nurses, physical and occupational therapists, speech-language professionals, psychologists, and other specialists. Family members and caregivers may participate, particularly in helping people manage daily activities and continue care outside clinical settings. (medlineplus.gov)
Assessment and service settings
Assessment includes identifying functional needs and establishing an individual treatment plan. Services may be delivered in hospitals, inpatient rehabilitation centres, outpatient practices, or the home. Rehabilitation is not necessarily postponed until medical treatment has ended: it may occur alongside other interventions, including during intensive care. Modifying tasks or environments can form part of the programme, alongside treatment directed at the person. (medlineplus.gov)
Standardized instruments can describe functioning across conditions. The WHO Disability Assessment Schedule (WHODAS 2.0), grounded in the ICF framework, assesses six domains: cognition, mobility, self-care, getting along with others, life activities, and participation. Its 36-item version provides overall and domain-specific scores, while a shorter 12-item version provides a brief overall assessment. Administration may involve self-report, an interview, or a proxy respondent. (who.int)
Access and health-system organization
Rehabilitation is an essential component of universal health coverage, alongside health promotion, prevention, treatment, and palliative care. WHO's April 2024 fact sheet reported an estimated 2.4 billion people living with conditions that could benefit from rehabilitation. It identified barriers including shortages of trained professionals, limited services outside urban areas, high out-of-pocket costs, insufficient equipment, and weak referral pathways. (who.int)
WHO launched Rehabilitation 2030 in 2017 to strengthen rehabilitation within the health system. Its priorities include leadership and governance, multidisciplinary workforce development, expanded financing, and improved data collection and research. Emergency preparedness is another service-planning concern: disasters and other emergencies can simultaneously increase rehabilitation needs and disrupt existing care, creating requirements for both early response and longer-term continuity. (who.int)