Sound like the guy is struggling with mental illness. Unfortunately, this carries a huge stigma in our culture (even though the brain can be ill just like any o

Sound like the guy is struggling with mental illness. Unfortunately, this carries a huge stigma in our culture (even though the brain can be ill just like any other organ, and there's no shame in that) which makes convincing a person to get help not easy (the "crazy" part). Which means this person's behavior may be hurting other people, thus reinforcing the stigma. Maybe try to talk to him in his lucid mode and explain the problem, not in terms of him being crazy but in terms of how his actions influence other people and what he could do to change it - maybe consult with a social worker? If he's unwilling to do anything about it then it's up to you to decide whether his behavior is more than you and your team can tolerate. It probably won't get better by itself - mental illness rarely does. Other people have the right to mental health and safety too, and this needs to be taken into account.