Florid mania caused by bipolar can be a very strange condition to
behold, probably pretty scary for the patient suffering it also, depending.
Pacing, motor restlessness and non-stop stream-of-consciousness rambling
and ranting for hours until sometimes the patient has to be aggressively
sedated before they collapse from exhaustion.
Even mild cases of mania can strain human relationships, particularly
when the sufferer is seated next to you on a plane..