A stroke is characterized by a reduced blood supply to the brain. It is an emergency condition and may be caused due to ischemic or rupture of the blood vessels. The symptoms of a stroke are difficulty speaking and understanding, numbness or paralysis of the face, leg, or arm, headache, blurred vision, and trouble walking.
The causes of stroke include uncontrolled blood pressure, trauma, cerebral amyloid angiopathy, aneurysms, and overtreatment with blood thinners.
A stroke diagnosis can be made by blood tests, physical examination, and imaging techniques such as carotid ultrasound, CT scan, MRI, echocardiogram, and cerebral angiogram.