I need to know if my vertigo is caused by nerve damage, since when I push inside my mouth on my gums with a pen I can send sensations of cold water dripping or bugs crawling up the side of my jaw, around my eyes and down the side of my nose. Strangely, my vertigo subsides for hours and on rare occasions even days after pushing here. However, it is a puzzle to guess exactly what angle and what spot to push.