Disability is an impairment that may be cognitive, developmental, intellectual, mental, physical, etc. It affects everyday activities of the individual to a considerable amount. It may be present in an individual from birth or occur during one's lifetime. Disability has different meanings in different societies of the world. Disability is an injury that restricts the functions or movements of an individual. It is the consequence of an impairment caused to an individual. It can be said that it is essentially a medical condition which does not permit an individual to perform any activity or movement in a normal way.
Disability means inability to do work. In fact, it is the state of an individual, when he/she cannot work efficiently.