DWQA Questions › Category: Extraterrestrial Interlopers › Can essential tremor be caused by a chronic virus, and if so, in what percent of cases? 0 Vote Up Vote Down Nicola Staff asked 15 hours ago Here again, we would say this is mostly neurological and karmic rather than viral except for about 5 to 10% of cases. Please login or Register to submit your answer Username or Email Address Password Remember Me Connect with: