A disability maybe defined as a condition which may restrict a person's mental, sensory and/or mobility functions to undertake and/or perform a task in the same way as a person who does not have a disability.
Disabilities affect people in different ways, a disability is generally a conditioned caused by accident, trauma, genetics or disease, which may restrict a person's mental processes, senses or mobility.
In each of the common conditions described, there is no known "cure" known to scientists at this time. These conditions are managed most effectively via early detection / identification, accurate diagnosis and prompt interventions / treatments. In each of these conditions, the person is expected to have a normal life span, except it maybe shortened by some other condition that maybe present at the same time.