My father has hypertension since last 5 yrs and he is diagnosed with left and right both carotid arteries stenosis of 60 percent which lead to formation of small clots in brain.. He has been using tablets for bp since 5 years and tablets for clots and stenosis since last 6 mnths... But he has become very dull and has complaint of dizziness...How to make him a normal person.. Which treatment should be done stent, carotid endarterectomy or better to continue with medicines? Please suggest... Iam unable to see him so dull..