Hi Russell,

It's the "momentary tinnitus, a high-pitched tone that lasts five to 30 seconds" which I have a problem with. These are the tones I hear, and I would not put them down to tinnitus, which I also have and which is constant (too many rock concerts). These high-pitched tones are so different in sound from regular tinnitus that I am curious as to their source. Also, only some people profess to hearing such things.

I don't know if the cause is internal or external, but they sure make me curious as to their source.

Good hearing from you,

Cathryn