Yes and mine is caused by a rare neurological disorder called Hereditary Nerve Pressure Palsy, it also falls under Charcot-Marie Tooth (CMT). I get electrical flowing feelings every now and then mostly in the left side of my chest and near my groin on the right side. Once I thought is was my cell phone on silence, just vibration. It is a very weird sensation. Now I'm getting internal vibrations through my entire body. My body does not shake I just feel it inside. I hope this will help. I would definitely recommend seeing a Neurologist and suggest Genetic Testing. This is how my condition was found, otherwise I would still be going crazy looking for answers. Good Luck and I hope you find the answers.