What Is Stroke? (Brain Attack)
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A stroke or brain attack is a condition in which the brain cells suddenly die leading to sudden focal neurological deficit in from of weakness of arm or leg, facial deviation, speech problem, giddiness with vomiting, or unconsciousness because of a lack of oxygen due to blockage of blood flow in certain area of brain or the rupture of an artery that feeds the brain. The patient may suddenly lose the ability to speak, there may be memory problems, or one side of the body can become paralyzed.


Stroke is global health problem. It is the second commonest cause of death and fourth leading cause of disability worldwide. Approximately 20 million people each year suffer from stroke and 5 million of these do not survive. In India stroke is major leading cause of death and disability in young age population also.

The two main types of stroke include ischemic stroke and hemorrhagic stroke.

  • Ischemic stroke accounts for about three-quarters of all strokes and occurs when a blood clot, or thrombus, forms that blocks blood flow to part of the brain. If a blood clot forms somewhere in the body and breaks off to become free-floating, it is called an embolus. This wandering clot may be carried through the bloodstream to the brain where it can cause ischemic stroke. 

·         A hemorrhagic stroke occurs when a blood vessel on the brain's surface ruptures and fills the space between the brain and skull with blood (subarachnoid hemorrhage) or when a defective artery in the brain bursts and fills the surrounding tissue with blood (cerebral hemorrhage).

Both types of stroke result in a lack of blood flow to the brain and a buildup of blood that puts too much pressure on the brain.

The outcome after a stroke depends on where the stroke occurs and how much of the brain is affected. Smaller strokes may result in minor problems, such as weakness in an arm or leg. Larger strokes may lead to paralysis or death. Many stroke patients are left with weakness on one side of the body, difficulty speaking, incontinence, and bladder problems.

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Dr. Puneet Agarwal
Head of  Neurology
Max super Specialty Hospital, Saket, N.Delhi

DM (Neurology), FCCN (USA)
Ex Assist. Prof. Neurology AIIMS, N.Delhi

** Regarded as Best (Top) Neurologist, Delhi, India by majority of Google reviewers.


He topped his DM Neurology course in G.B.Pant Hospital, N.Delhi.He had worked in All India Institute of Medical Sciences (AIIMS) as Assistant Professor Neurology after his D.M (Neurology).He did fellowship in Neurology in stroke and critical care Neurology in UCLA, Los Angeles, USA and Santara Hospital, Virginia, USA.He did training fellowship in sonothrombolysis, TCD and carotid Doppler and also sleep study in National University Hospital, Singapore.Rated as best (top) neurologist in Delhi India on google by many reviewers. 

Areas of interest

  • Stroke, thrombolysis, sonothrombolysis and neurocritical care
  • Movement disorders, Parkinson disease, DBS
  • Inj Botulinum Toxi
  • Epilepsy and epilepsy surgery
  • Headache
  • Sleep disorders



Among the first to start sonothrombolysis in patients of acute stroke in North Indiaand at MaxSuper specialty Hospital.Among first to do inflammatory genes study in stroke patients and IV valproate in status epilepticus in India. He is having special interest in treating patients of stroke, Parkinson disease and deep brain stimulation (DBS) and Inj Botulinum Toxin. 


Research and Academics

  • More than 50 international and national publications and chapters in peer reviewed journals and text books like Cochrane, Lancet, Seizure, Brain research and epilepsia etc.
  • He has been thesis and research projects guide for many students.  


  • Award for best platform paper presentation in prestigious IndianAcademyof Neurology (IAN) conference 2002 and U.P Neurocon 2004.
  • Biography published in reputed “WHO’S WHO IN THE WORLD” 2006 book from New Jersey, USA.
  • Best Young teacher award in 2003.
    ** Regarded as Best (Top) Neurologist, Delhi, India by majority of Google reviewers.
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Stroke & Thrombolysis
Movement Disorder
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