[skmurphy]

https://pubmed.ncbi.nlm.nih.gov/17848828/ documents a single case.

https://pubmed.ncbi.nlm.nih.gov/31668156/ is a survey of 19 studies that identified 28 cases. Conclusion: "Of the 28 cases reported, 14 patients had certain precipitating factors like insomnia, lack of food intake, history of mental illness, stress, and psychoactive substance use."

Given the millions who meditate I think risk is less than a range of ordinary daily activities we engage in that can entail a life changing injury: crossing the street, diving into a pool to swim, and eating peanut butter (aflatoxin risk) to name three. The suggestion to consult a mental health professional, in the absence of any prior psychological issues that were significant, seems to me to be a waste of time and money.