One could see how meditating could lead to a break like that. When you do something that connects your mind to the real and physical present inside your senses, which can suppress the reflections and noise from the way we interpret the representations of the world around us, coming back is jarring and panic inducing.

This bad meditation effect sounds like the same effects of hyper-paranoia from cannabis, or a "bad trip," on hallucinogens, which can have dramatic short term and pervasive long term effects.