pattern, I think the thin air of cabins can make some people temporarily doolally. We had a lady in her 60s calmly go to the washroom of a 737, and walk out stark naked in a confused state. In some of these cases, if the situation is contained, I can't understand why there is a need to divert. The person could be wrapped, or told to go back and get dressed 'as it's a bit cold', and one of the crew could be assigned to attend closely to the person. Yet I have seen airrage incidents where the passenger is cuffed and contained, and a diversion still takes place. I don't see it justified.