I ve had a ringing in my ears (primarily the left) for some time now. Recently I ve noticed a stiffness or tightness in my lower jaw and the back of my neck. I just assumed it was stress from my job, but now I m not so sure. I haven t experienced any noticeable hearing loss, or headaches, etc. As a side note, for years whenever I tilt my head back to look up (at birds, clouds, or other interesting things above the norm!), I frequently feel dizzy and disoriented.