(405 ILCS 5/1-129)
Sec. 1-129. Mental illness. "Mental illness" means a mental, or emotional disorder that substantially impairs a person's thought, perception of reality, emotional process, judgment, behavior, or ability to cope with the ordinary demands of life, but does not include a developmental disability, dementia or Alzheimer's disease absent psychosis, a substance abuse disorder, or an abnormality manifested only by repeated criminal or otherwise antisocial conduct.
(Source: P.A. 93-573, eff. 8-21-03.)
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Last modified: February 18, 2015