hypochondri-googler
One who spends excessive amounts of time online googling symptoms so he/she can diagnose his/her self with medical conditions/ailments.
Example of a hypochondri-googler: I stayed up all night googling bothersome medical symptoms and am now worried that I may drop my head to my desk causing possible further medical conditions such as a concussion, coma and the like. I’ll have to find energy to google that.