Welcome in H.C.M.
I have gone through your query regarding dizziness
and ringing in ear, though you are diabetic and hypertensive.
I would like to tell you that ringing in ear and imbalance both develop from inner ear
(Imbalance from vestibule and ringing from cochlea
of inner ear). As you are diabetic and hypertensive also and both these are well known to develop such complications in ear. My opinion is that you should consult your ENT doctor for thorough examination and VESTIBULO CCOCHLEAR FUNCTIONS TESTS and blood chemistry to pinpoint the diagnosis so that treatment may be plan.