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What is a Developmental Disability?

WHAT IS A DEVELOPMENTAL DISABILITY?

A developmental disability is a disability that originates before an individual attains age 18 years, continues, or can be expected to continue, indefinitely, and constitutes a substantial disability for that individual.

This term shall include intellectual disability, cerebral palsy, epilepsy, and autism. This term shall also include disabling conditions found to be closely related to intellectual disability or to require treatment similar to that required for individuals with intellectual disability, but shall not include other handicapping conditions that are solely physical in nature.

A “substantial disability” means the existence of significant functional limitations in three or more of the following areas of major life activity, as determined by a regional center, and as appropriate to the age of the person:

Self-care

Receptive and expressive language

Learning

Mobility

Self-direction

Capacity for independent living

Economic self-sufficiency

Autistic Disorder

People with autistic disorder usually have significant language delays, social and communication challenges, and unusual behaviors and interests. Many people with autistic disorder also have intellectual disability. Autistic disorder is present before the age of 3 and lasts throughout a person’s life, although symptoms may improve over time.

Cerebral Palsy

Cerebral palsy refers to a group of disorders that affect a person’s ability to move and to maintain balance and posture. It is due to a non-progressive brain abnormality, which means that it does not get worse over time, though the exact symptoms can change over a person’s lifetime.

Epilepsy

Epilepsy, sometimes referred to as seizure disorder, is a general term that refers to a tendency to have recurrent seizures. There are many kinds of seizures, but all involve abnormal electrical activity in the brain that causes an involuntary change in body movement of function, sensation, awareness, or behavior.

Intellectual Disability

Intellectual disability is characterized both by a significantly below-average score on a test of mental ability or intelligence and by limitations in the ability to function in areas of daily life, such as communication, self-care, and getting along in social situations and school activities.