Can Buddhist practice make you more emotionally volatile?

When I spend an extend period with Buddhist practice I become emotionally more volatile or at least my emotions seem stronger and more likely to come to the surface. I've often had reactions that are uncharacteristically emotional though the emotion feels authentic. The period of practice doesn't even have to be that long - sometimes a day retreat will have this effect. It could be linked with meditation however it could be study or the experience of sangha that does it. Is this something that people recognise? Is it written about anywhere by any teacher? I want to know if it's a common outcome and advice around working with it. Many Thanks