India, May 19 -- A stroke is a medical emergency that involves the blood supply to the brain being disrupted. According to the Mayo Clinic website, they can be broadly categorised into two categories.

An ischemic stroke occurs when the blood supply to part of the brain is blocked or reduced. This prevents brain tissue from getting oxygen and nutrients, and the cells begin to die in minutes. A hemorrhagic stroke occurs when a blood vessel in the brain leaks or bursts and causes bleeding in the brain.

While strokes generally present themselves, there are a number of warning signs that people should be mindful of and seek medical help while experiencing them, according to Dr Rahul Chawla, a neurologist with training from AIIMS New Delhi, c...