A ruptured brain aneurysm occurs when a weakened artery in the brain bursts, causing bleeding that can lead to a life-threatening haemorrhagic stroke. Common early symptoms include a sudden, severe “worst headache,” nausea, stiff neck, blurred or double vision, light sensitivity, seizures, confusion and loss of consciousness. Causes often involve high blood pressure, artery weakness and other risk factors. Immediate medical care is crucial — treatments range from emergency endovascular procedures like coiling to surgical clipping to stop bleeding and prevent further damage. With expert care from Dr Arvind Nanda, advanced diagnosis and tailored treatment can improve outcomes and support recovery.