TAT, EFT, BSFF and newer techniques like PEAT are meridian therapy. I’m a certified trainer of PEAT and can say that never had seen any abreactions described. Its more like seems a depersonalization syndrome. First of all, it is needed to stop panic, because it does everything worse.
BSFF is a mild version of hypnosis and is COMPLETELY safe to run.
Anyway, before using anything it is recommended to make sure that user doesn’t hav any hidden mental disorders (especially schizophrenia and etc.).
Tranquilizer usually help with it.