Disability - AbsoluteAstronomy.com

A disability may be physical, cognitive, mental, sensory, emotional, developmental or some combination of these.
Many people would rather be referred to as a person with a disability instead of handicapped. "Cerebral Palsy: A Guide for Care" at the University of Delaware

University of Delaware

The university is organized into seven colleges:* College of Agriculture and Natural Resources* College of Arts and Sciences* Alfred Lerner College of Business and Economics* College of Earth, Ocean and Environment* College of Education and Human Development...

offers the following guidelines:
An individual may also qualify as disabled if he/she has had an impairment in the past or is seen as disabled based on a personal or group standard

Convention (norm)

A convention is a set of agreed, stipulated or generally accepted standards, norms, social norms or criteria, often taking the form of a custom....

or norm

Norm (sociology)

Social norms are the accepted behaviors within a society or group. This sociological and social psychological term has been defined as "the rules that a group uses for appropriate and inappropriate values, beliefs, attitudes and behaviors. These rules may be explicit or implicit...