A device similar to a computer keyboard, either with a cradle to rest a telephone handset on or connected directly to the telephone.  A TDD allows the user to communicate by typing messages on the keyboard and receiving messages on the screen above the keyboard. This teletext device typewriter is usually referred to as a TTY by members of the deaf and hard of hearing community.

Therapy which uses recreation and activities to improve functioning and enhance the health and well-being of people whose functional abilities are limited due to illness, disability or other conditions.

Neurological disorder characterized by tics— involuntary, rapid, sudden movements or vocalizations.

The process of moving from one stage of life or "set" of services to another; for example, transitioning from services provided by the school system to adult life in the community as the student nears completion of school or moving a child from an early intervention or preschool program to a school setting.

A brain injury from externally inflicted trauma.  The primary causes of TBI include incidents involving motor vehicles, falls, acts of violence and sports injuries. TBI can range from mild (concussions) to severe, with outcomes ranging from a few symptoms to lifelong impairment.

Genetic condition that produces abnormal growths in the body from birth throughout life. Symptoms may include seizure disorder, intellectual impairment, behavior problems, white skin patch, and facial rash.