An acute stroke is a sudden “brain attack” where blood flow to the brain is blocked or a vessel bursts, causing rapid damage to brain cells. Recognising symptoms like sudden weakness, speech difficulty and severe headache is crucial, as early emergency care boosts recovery chances. Treatments include clot-busting medicines, mechanical thrombectomy or surgery, plus rehab for regaining function. With expert care from Dr Arvind Nanda, timely diagnosis and modern interventions help save lives and support recover