(405 ILCS 5/3-701)
91 1/2, par. 3-701) Ch.
Sec. 3-701. (a) Any person 18 years of age or older may execute a petition asserting that another person is subject to involuntary admission on an inpatient basis. The petition shall be prepared pursuant to paragraph (b) of Section 3-601 and shall be filed with the court in the county where the respondent resides or is present.
(b) The court may inquire of the petitioner whether there are reasonable grounds to believe that the facts stated in the petition are true and whether the respondent is subject to involuntary admission. The inquiry may proceed without notice to the respondent only if the petitioner alleges facts showing that an emergency exists such that immediate hospitalization is necessary and the petitioner testifies before the court as to the factual basis for the allegations.
(c) A petition for involuntary admission on an inpatient basis may be combined with or accompanied by a petition for involuntary admission on an outpatient basis under Article VII-A.
(Source: P.A. 96-1399, eff. 7-29-10; 96-1453, eff. 8-20-10.)
So anyone 18 years of age or older can attempt to get someone the mental health help they need. The petition is normally presented at the emergency room of a hospital where the subject has been taken for help. Family members can usually get their local ambulance to transport the subject if they know its for a mental health reason and that a petition will accompany the subject to the hospital.
There are however three possible reasons for hospitalization, one or more of which need to be met before hospitalization will occur. The first two are;