Thanks for writing to H.C.M.
Ihave gone through your query regarding tinnitus
, headache, nausea and tinny hyper intense focus on frontal lobe
Here I would like to tell you that mri finding is not related to your present problem and in my opinion most probably you are having meniere's disease, this is a self limiting disease with unknown etiology. You may take-
(a) Low salt diet.
(b) Anti vertigo
drugs like cinnargin or betahistine
I hope this will help you.