Disabilities make it harder to do normal daily activities. They may limit what you can do physically or mentally, or they can affect your senses. Disability doesn't mean unable, and it isn't a sickness. Most people with disabilities can - and do - work, play, learn, and enjoy full, healthy lives. Mobility aids and assistive devices can make daily tasks easier.
About one in every five people in the United States has a disability. Some people are born with one. Others have them as a result of an illness or injury. Some people develop them as they age. Almost all of us will have a disability at some point in our lives.
Department of Health and Human Services
References and abstracts from MEDLINE/PubMed (National Library of Medicine)