Hypnosis is powerful means of inducing regression, There are two types of regression. Partial, where the person feels that he or she is an observer back in the past and Complete, where the person goes back in time and feels he or she is really back in the memory.

 

A true regression requires a really deep trance and in some cases the person can regress back into painful and very upsetting experiences (Abreaction). Unless handled skilfully, this can lead to psychological damage and dissociative states.

 

At this time false memories can also be implanted even by apparently well intentioned questions and the person may  come to believe things about the past that are not true -- False Memory Syndrome.

 

Persons suffering from certain psychological problems such as bipolar disorder and schizophrenia may be harmed by hypnosis; especially if it involves regression. Some people in the prodomal stage of these illness may not be recognised by lay practitioners.

 

In an apparently "normal person" sloppy hypnotic technique may trigger severe psychological discomfort.

 

Since many hypnotists and hypnotherapists  in Mumbai  are trained at "travelling hypnotic schools" by trainers who are little more than stage hypnotists these dangers are real. We have seen one case of a person who attempted suicide soon after a hypnotic session with a person who billed herself "best hypnotherapist in Mumbai".

 

In another case a patient with schizophrenia commited suicide soon after PAST LIFE REGRESSION therapy by a family member who allegedly trained by a californian read more about dangers of this here

 

In Mumbai India Past life therapy has become craze and one must be very careful about who one allows to enter your mind.