Understanding Disability: Definitions and Root Causes

Disability affects over a billion people worldwide, yet many still view it through a narrow lens of physical limitation. Understanding what disability truly means and what causes it is essential for creating an inclusive society that respects human rights and dignity. This understanding becomes even more critical in India, where millions live with disabilities while facing barriers in education, employment, and healthcare access.

What does disability actually mean? 🔗

Disability is part of being human, affecting about 16% of the global population . But defining disability is more complex than it appears. The World Health Organization frames disability as resulting from the interaction between individuals with a health condition and personal and environmental factors , including negative attitudes, inaccessible transportation, and limited social support.

This definition marks a significant shift from viewing disability as merely a medical problem. Disability should be viewed neither as purely medical nor as purely social . Instead, it represents a dynamic relationship between a person’s health condition and the world around them. A person using a wheelchair faces disability not just because of their physical condition, but because buildings lack ramps, public transport isn’t accessible, and employment opportunities remain limited.

The biopsychosocial model of disability 🔗

The International Classification of Functioning, Disability and Health offers a balanced framework. Disability is an umbrella term for impairments, activity limitations or participation restrictions, defined as the dynamic interaction between health conditions and contextual factors . This means disability encompasses physical, mental, sensory, or social impairments that interact with various barriers to hinder full participation in society.

In India, the Rights of Persons with Disabilities Act, 2016 recognizes 21 types of disabilities , expanded from just seven in the earlier 1995 legislation. These include locomotor disability, visual impairment, hearing impairment, speech and language disability, intellectual disability, mental illness, and conditions like autism, cerebral palsy, muscular dystrophy, and even acid attack victims.

What causes disability? 🔗

Disability arises from multiple sources, and understanding these causes helps in prevention and support. The causes range from genetic factors and birth complications to environmental conditions, accidents, diseases, and social determinants like poverty.

War and conflict 🔗

Land mines, cluster bombs, bullets, and chemicals used in wars cause more disabilities in the world today than anything else . Armed conflicts destroy not just infrastructure but lives, leaving survivors with permanent disabilities from explosions, injuries, and violence. The destruction of homes, schools, health centers, and livelihoods from conflicts and wars leads to increased disability, poverty, and disease . Women are particularly vulnerable, often injured while performing daily tasks like farming or gathering water in conflict zones.

Poverty and disability: a vicious cycle 🔗

Poverty is one of the biggest causes of disability . Poor communities face unsafe living and working conditions, inadequate sanitation, crowded housing, and limited access to education, clean water, and nutritious food. People living in poverty may work under hazardous conditions associated with adverse health outcomes, including disability, with limited access to healthcare and education .

In India, individuals from poorer households have a higher risk of disability due to poor health, lack of adequate health intervention, poor living conditions, and higher risk of injuries . The relationship between poverty and disability is bidirectional-poverty increases the risk of disability, and disability often leads families deeper into poverty due to medical expenses and lost employment opportunities.

Accidents and injuries 🔗

Road traffic accidents, workplace injuries, and domestic accidents represent major causes of disability globally. Disability in India is associated with increasing non-communicable diseases, rising longevity, and increasing accidents and injuries . Injuries due to road traffic accidents, occupational injury, violence, conflicts, falls and landmines have long been recognized as contributors to disability .

Among working age disabled population, home accidents and transport accidents each account for about 29 percent of burns and injuries as causes of disability. Workers often face dangerous machinery and hazardous chemicals without proper safety training or protective equipment, leading to preventable disabilities.

Diseases and health conditions 🔗

Both communicable and non-communicable diseases contribute significantly to disability. Air pollution, occupational disease, poor water supply, sanitation, personal and domestic hygiene, and malnutrition also contribute to disability . Conditions like tuberculosis, polio, cardiovascular disease, diabetes, and mental health disorders can all lead to long-term disability.

In India, about one-third of disabilities occur at birth, caused by many factors including genetics, care during pregnancy, complications during birth, and infections at time of birth . After birth, disability arises from varying socioeconomic, environmental, and demographic factors throughout life.

Age-related conditions 🔗

As populations age, disability becomes more common. Locomotor disability is the most common form in India , followed by hearing and visual impairments. People with disabilities may experience age-related health conditions such as osteoporosis and loss of strength and balance more frequently and earlier than usual .

Beyond limitation: recognizing ability and potential 🔗

The traditional view of disability as pure limitation fails to recognize the abilities and contributions of people with disabilities. Progress on improving social participation can be made by addressing the barriers which hinder persons with disabilities in their day to day lives . This perspective shift is crucial-disability results not from individual impairment alone, but from society’s failure to accommodate diverse needs.

Environmental barriers create disability by limiting participation. A deaf individual without a sign language interpreter, a wheelchair user in a building without ramps, or a blind person using a computer without screen-reading software all face disability created by environmental factors rather than their inherent conditions. Inaccessible environments create barriers to participation and inclusion .

The Rights of Persons with Disabilities Act, 2016 in India represents a paradigm shift toward this understanding. The legislation mandates accessibility in public buildings, increases reservation in government vacancies from 3% to 4% , and ensures every child with disability between ages 6 and 18 receives free education. It establishes that people with disabilities should not be viewed as objects of charity, but as rights-holders deserving equal opportunities.

The importance of awareness and attitude change 🔗

Knowledge and attitudes are important environmental factors, affecting all areas of service provision and social life . Negative attitudes toward disability lead to discrimination in employment, education, and social participation. Raising awareness and challenging negative attitudes are often first steps towards creating more accessible environments .

Combating stigma requires sustained effort. Successful interventions combine personal contact with people with disabilities, public education campaigns, and policy changes. When communities understand disability as part of human diversity rather than tragedy, real inclusion becomes possible.

Prevention and inclusion together 🔗

Understanding causes of disability informs prevention strategies. Primary prevention addresses root causes-ensuring safe working conditions, clean water, adequate nutrition, vaccination programs, and road safety measures. Secondary prevention focuses on early detection and intervention to prevent conditions from worsening. Tertiary prevention provides rehabilitation and support to maximize function and participation.

However, prevention must respect the rights and dignity of people with disabilities. Viewing disability as a human rights issue is not incompatible with prevention of health conditions as long as prevention respects the rights and dignity of people with disabilities . The goal is preventing disabling barriers alongside addressing health conditions.

What do you think? How can we shift from viewing disability as individual limitation to recognizing it as a result of environmental barriers? What role should education play in challenging negative attitudes toward people with disabilities in our communities?

References

1. https://www.who.int/standards/classifications/international-classification-of-functioning-disability-and-health
2. https://pib.gov.in/newsite/printrelease.aspx?relid=155592