Lazarus (1976, 1984) described several cases in which psychiatric problems such as depression, agitation and schizophrenic de-compensation were observed. These included a 34 year old woman who became suicidal and a 24 year old woman who experienced severe de-personalisation, apparently as a result of transcendental meditation (TM). He also suggested that participants who failed to experience the benefits of meditation might experience a sense of failure and anxiety rather than the enhanced self-understanding that they perhaps were looking for.
Ramesh Manocha.