I have tinitus since 4 weeks. It became when I started to take aerius anti-histamine to cure stuck left Eustachian tube, at 3rd day. Then became so strong so I couldn t sleep 72 hours. And went to the other ear also. The throat felt with slight inflamation which tend to feel stronger if I force it to swallow several minutes (empty, without food) (trying this way to drive the blood in the head). The noise disappears after 7-8 hours standing/moving/working and slowly appears when l m in the bed for more than 20-30 minutes. The side on which the head is lying is important - the noise grows stronger on the upper side of the head. I believe it s from the nerves which come out of the inner-ear. I don t know what s around the inner-ears - empty space/liquid/soft tissue ? I still have very good hearing, tests show linear, better than average people. I have the left Eustachian tube still feeling sore despite taking aerius, but now it s not stuck, it s ventilating. I ve stopped aerius at 15th day, now using k-steroid nazonex in my nose. My doctor doesn t know what it is, but thinks it s kind of viral labyrinthtit so I take aciclovir also.