During a hypnosis show, suggestions are given to volunteers in an altered state of
consciousness. An untrained and/or inexperienced hypnotist MAY not know how to
phrase their suggestions properly and as a result MAY trigger a traumatic past event
in the mind of one or more of their volunteers. This is usually uncommon and can
happen whether a hypnotist is trained or not trained, but only a trained hypnotist will
know how to help a person reliving a traumatic event.