Carotid artery stenosis is the narrowing of major neck arteries that supply blood to the brain, often due to plaque buildup, raising stroke risk. Early signs may include sudden weakness, numbness, speech trouble, vision changes or dizziness — warning signals to seek urgent help. Causes include high blood pressure, smoking, high cholesterol and diabetes that damage artery walls over time. Treatment ranges from lifestyle changes and medicines to advanced procedures like carotid endarterectomy or stenting to open blocked arteries and prevent strokes. With expert evaluation and care from Dr Arvind Nanda, timely diagnosis and personalised treatment helps manage symptoms and lower future stroke risk