Dr. Sreekanta Swamy (Lead Senior Consultant - Neurology) talks about Brain Stroke, the risk factors and the diagnostic modalities. Brain stroke happens when there is a blockage in the blood circulation in the brain or when a blood vessel in the brain breaks and leaks. The burst or blockage prevents blood and oxygen from reaching the brain tissue. Without oxygen, the tissues and cells in the brain are damaged and die in no time leading to many symptoms.