Psychedelics are extremely strong experience, ayahuasca is supposed to be the strongest. If you have anything broken in your personality, it will come up. Thats why at least initially it should be screened and if OK handled by professionals who can lead, guide or stop the experience if needed.

I've seen lifelong schizophrenia triggered by nothing more than a bit of binge drinking. For some people it takes trauma to trigger bad things, some drugs, some have luck and manage to go through life with such a thing without ever experiencing it. Powerful tool, nothing more, nothing less.