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A stroke occurs when a blood vessel in the brain ruptures and bleeds, or when there’s a blockage in the blood supply to the brain. The rupture or blockage prevents blood and oxygen from reaching the brain’s tissues.
Without oxygen, brain cells and tissue become damaged and begin to die within minutes.
There are three primary types of strokes:
Transient ischemic attack (TIA) involves a blood clot that typically reverses on its own.
Ischemic stroke involves a blockage caused by either a clot or plaque in the artery. The symptoms and complications of ischemic stroke can last longer than those of a TIA, or may become permanent.
Hemorrhagic stroke is caused by either a burst or leaking blood vessel that seeps into the brain.
Stroke symptoms
The loss of blood flow to the brain damages tissues within the brain. Symptoms of a stroke show up in the body parts controlled by the damaged areas of the brain.
The sooner a person having a stroke gets care, the better their outcome is likely to be. For this reason, it’s helpful to know the signs of a stroke so you can act quickly. Stroke symptoms can include:
paralysis
numbness or weakness in the arm, face, and leg, especially on one side of the body
trouble speaking or understanding others
slurred speech
confusion, disorientation, or lack of responsiveness
sudden behavioral changes, especially increased agitation
vision problems, such as trouble seeing in one or both eyes with vision blackened or blurred, or double vision
trouble walking
loss of balance or coordination
dizziness
severe, sudden headache with an unknown cause
seizures
nausea or vomiting
A stroke requires immediate medical attention. If you think you or someone else is having a stroke, call 911 or local emergency services right away. Prompt treatment is key to preventing the following outcomes:
brain damage
long-term disability
death
It’s better to be overly cautious when dealing with a stroke, so don’t be afraid to get emergency medical help if you think you recognize the signs of a stroke.
Consult us : Dr. C.H. Siva Rama krishna M.D , DM
General Physician & Neurology
Consultant Senior Neurologist