What is aortic dissection? The rare heart condition linked to Lindsey Graham's cause of death that can strike without warning. Check causes, symptoms, risk factors and when to seek emergency help

The sudden death of US Senator Lindsey Graham has sparked widespread interest in what aortic dissection is, the causes of aortic dissection, and Graham's cause of death. Preliminary findings from the District of Columbia Medical Examiner's Office said Lindsey Graham's cause of death was aortic dissection due to arteriosclerotic cardiovascular disease, a rare but life-threatening medical emergency.

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