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755 ILCS 5/11a-1

    (755 ILCS 5/11a-1) (from Ch. 110 1/2, par. 11a-1)
    Sec. 11a-1. "Developmental disability", "intellectual disability", and "related condition" defined.
    "Developmental disability" means "developmental disability" as defined in Section 1-116 of the Mental Health and Developmental Disabilities Code.
    "Intellectual disability" means "intellectual disability" as defined in Section 1-116 of the Mental Health and Developmental Disabilities Code.
    "Related condition" means a condition that:
        (1) is attributable to cerebral palsy, epilepsy, or
    
any other condition, other than mental illness, found to be closely related to an intellectual disability because that condition results in impairment of general intellectual functioning or adaptive behavior similar to that of individuals with an intellectual disability, and requires treatment or services similar to those required for those individuals. For purposes of this Act, autism is considered a related condition;
        (2) is manifested before the individual reaches age
    
22;
        (3) is likely to continue indefinitely; and
        (4) results in substantial functional limitation in 3
    
or more of the following areas of major life activity: self-care, language, learning, mobility, self-direction, and capacity for independent living.
(Source: P.A. 102-72, eff. 1-1-22; 102-109, eff. 1-1-22; 102-972, eff. 1-1-23.)