According to a(n) therapist, an adolescent who is abusing drugs may be doing so because of maladaptive behavior patterns between various family members.

The answer is "family therapist".

Family therapy, likewise alluded to as couple and family treatment, marriage and family treatment, family frameworks treatment, and family advising, refers to a branch of psychotherapy. It tends to see change regarding the frameworks of cooperation between relatives. It underlines family connections as a vital factor in mental health. 

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