Brain damage or poisoning are much, much less likely than simply having a bad trip, which can have PTSD-like symptoms. But if set and setting are carefully cont

Brain damage or poisoning are much, much less likely than simply having a bad trip, which can have PTSD-like symptoms. But if set and setting are carefully controlled, bad trips are much less likely to occur, as you have no overly negative stimuli to induce a bad trip.