Rather than worrying about symptoms please think about monitoring your health. Go for a fasting blood sugar immediately and take all the preventive measures depending on your diagnosis. Diabetes initially will have increase in urination, increase in hunger and increase in water consumption followed by Neuropathy i.e nerve problems but it may have an atypical presentation as well.
Take care!
Hi,
How are you? Borderline diabetes cannot cause the symptoms that you mentioned, but can cause infections such as sinusitis. You need to get a fasting and post lunch sugar levels done to check the status of borderline diabetes.
Coming to headaches and tinnitus it is related to nervous system, more specifically related to vestibulo cochlear nerve damage.
I would suggest that you visit a neurologist in this regard for further examination.
Good luck.