Tinnitus , like insomnia, is not usually the real issue. The issue that brings patients for treatment is generally anxiety or frustration with tinnitus or insomnia, or other similar problems. Any treatment that lowers anxiety has a very good chance of 'helping' the tinnitus or insomnia -- the problem does not go away or resolve, but the sufferer does not ... suffer ... as much.

And obviously everything is a bell shaped curve and any person may be outside of the +/1 2SD central area.