Generally speaking, the only time you can force an individual into treatment is when he or she poses an imminent danger to themselves or to others. In that circumstance, an individual could be committed to a mental hospital, typically for a short period of time (about one week but each case is variable). Once they no longer pose an imminent threat, they are released from the hospital with a recommended treatment plan. Typically, people can choose to follow the recommended treatment plan or not. If they don’t comply, there is no “penalty.”
Your mother may be in the best position to leverage him into treatment. She allows him to live with her despite him not being in treatment. If she no longer allowed that, then he may be forced to seek help. That might be the only way to convince him to participate in treatment.
Short of your mother attempting to leverage him into treatment, there is probably little else that can be done. As long as she allows him to live in her home, behaving the way he does, then he has no reason to change.
Depending upon how involved you are with your brother’s care, you may be able to assist your mother. Involve other members of the family if you think it would help.
Whether or not he has schizophrenia could only be determined by an in-person, mental health evaluation. He displays paranoid tendencies but it is difficult to know if it is due to his drug use or a mental illness.
For additional assistance, contact the National Alliance on Mental Illness (NAMI). NAMI is an advocacy group that assists people in navigating the mental health system. They may be able to provide you with additional ideas and resources for your family. Please take care.
Dr. Kristina Randle