Mich. Comp. Laws § 330.1498b

Sec. 498b. As used in this chapter, unless the context requires otherwise: (a) "Court" means the probate court or the court with responsibility with regard to mental health services for the county in which a minor who has requested hospitalization, for whom a request for hospitalization has been made, or who has been hospitalized pursuant to this chapter either resides or was found. (b) "Minor requiring treatment" means either of the following: (i) A minor with a substantial disorder of thought or mood that significantly impairs judgment, behavior, capacity to recognize reality, or ability to cope with the ordinary demands of life. (ii) A minor having a severe or persistent emotional condition characterized by seriously impaired personality development, individual adjustment, social adjustment, or emotional growth, which is demonstrated in behavior symptomatic of that impairment.