Mine comes from my head too -humming more on the right side. It lessened greatly recently but I have no idea from what. It is now back.
Some of the things I was taking at the time: biocidin, rhodiola, selenometh (selenium iodine), collagen, ginger in lemon water. If I had to guess, it would be the liposomal biocidin.
Where else could it come from? (If not the head)
Moderator, Lyme Forum
Symp started April/2013; Buhner's Lyme May 15-July24/14; Igenex pos. July 3/14
Doxy: July 4-Aug.24/14;Zithro July26-Aug24/14; Amox + Proben. Aug. 29/14;
added biaxin Sept. 26/14
Disc. amox,added Ceftin Nov. 20th.;
Disc. biaxin added Buhner bart herbs Dec/14;Jan/15 pulsing Tinda (w/ Ceftin);
Abx/herb break Apr-July/15; July-mino; Aug. added Rif;
Nov./15 mino - to biaxi