Hello Dear @cstrimel :) It is good to see you here.

I am sorry to hear about your sister and the things she went through.

IT is VERY tricky to diagnose DID and the great majority of cases is a result of repeated/extreme trauma during childhood. Even the 5% that did not suffer, let's say physical abuse, have gone through a horrifying trauma such as witnessing the murderer of a parent etc.. this is what studies and stats show. As for those who have developed DID in adult life, what studies show is that, when they are women they must have gone through something horrific like being molested, for instance. And for men, in general, this is mostly seen in veterans. But than again, the dissociation shown by this people can also be a symptom of PTSD.

So, my question/comment is whether you think that heavy drug use, especially hallicinogenics, could cause trauma enough to induce DID.

Based on all the literature I have come across, I haven't seen a single case of DID which is not related to direct physical or emotional trauma. All the episodes you described your sister experienced sound to me very much like psychotic episodes, which are heavily associated with heavy drug use.

Thank you very much for taking part is this discussion and also, for the incredibly kind words at the end of your comment.

All the very best for you always.