Why dose coughing sometimes give you a really bad headache?
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When you cough, it flexes (squeezes) all your core muscles. That raises your blood pressure. Spiking blood pressure can cause headaches because it physically enlarges blood vessels, including the ones in your head. The vessels expanding due to the higher pressure inside them presses on the surrounding tissue and nerve endings, which can cause a headache.
Brief sharp spikes in your blood pressure, gives you transient alterations in brain blood vessel calibre and intracranial pressure. You must be very sensitive to the effect
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