Suicide risk assessment
For example, many state laws in the United States say that a person can be forced to go to the hospital, even if they do not want to go, if a doctor or mental health professional says they are suicidal.  In some states, the person can be physically restrained (for example, tied to a hospital bed) if they try to leave the hospital.  Some states also allow paramedics and doctors to give chemical restraints (medicines to make the person cooperate or be very tired), even if the patient does not want these medicines.