That's why magic is forbidden for kids and is said to be dangerous. One should be careful
It is said about 3rd eye, those who suffer from headaches should be careful while opening the 3rd eye. I myself don't suffer from it, but while doing the meditation for the first time I had a quite strong ache in my head, not directly on the 3rd eye, but somewhere around the temples and forehead.
That's a simple example, but yes. Everyone should be careful with meditations because this is not a toy to play with, as it acts on a ethereal level and if there is some kind of mental disorder, it can escalate and worsen the symptoms