You have hypertension
and your BP needs to be controlled. Your sugar levels are normal. CT brain shows only mild, old changes. The numbness in left hand can also be due to cervical spondylosis
with neuropathy. MRI of the neck, done in consultation with your neurologist
might help to pinpoint the problem.
You also need to get a fasting lipid profile
done as also renal function tests. You need to be on anti-platelet drugs (in view of BP and old infarct in brain) and anti-hypertensive medicines, and statins (after lipid profile)