Doctors may be treating a person who's hurt or been in a car accident, only to learn later that the injuries or accident occurred while the person was high on methamphetamine. It's not unusual to treat meth patients who've been in vehicle accidents. It's a dangerous drug and there's not a whole lot you can do for these people. Just watch their blood pressure and sedate them if they're psychotic. But they can have seizures, go into a coma.
Stroke is possible.
Couple the varied mix with the tendency of abusers to use alcohol or another drug while using meth, and the resulting behavior or damage can be unpredictable. I saw one person in the emergency room have a fight with a chair. He thought it was a man. It gets pretty scary. They have a wild-eyed look.