Left-Ear Ringing

[Tenet Nosce]

I've had constant left-ear ringing for nearly 10 years!

Jim Kent + if you have had "constant" ringing for that long, it is most likely tinnitus. Sounds to me like you have noise-induced hearing loss. Not too much to worry about- it usually doesn't progress as long as you limit your exposure to loud noises.

Here are the directions for the screening test a family doc would use. All you need is a tuning fork:

http://www.fpnotebook.com/ent/exam/TngFrkTsts.htm