Short-term memory problems, Severe anxiety, including fear that one is being watched or followed (paranoia), Very strange behavior, seeing, hearing or smelling things that aren’t there, not being able to tell imagination from reality (psychosis),Panic Hallucinations Loss of sense of personal identity ,Lowered reaction time, Increased heart rate (risk of heart attack), Increased risk of stroke,Problems with coordination (impairing safe driving or playing sports).
hope this helps.