Abstract
Seasonal variation in stroke occurrence is well described. However, correlation between sudden cold water exposure and stroke is not documented in literature. We report two cases of ischemic stroke on sudden cold water exposure. Case 1: A 73-year-old male developed sudden left face, arm and leg weakness immediately after taking a dip in the holy waters of Amritsar Golden Temple, during peak winter. Case 2: A 48-year-old male developed right side weakness and fell in bathroom while taking bath in cold water at 6am. Studies show that both stroke and atrial fibrillation peak in winter. Pathophysiologically, sudden cold water exposure increases sympathetic tone, which is mediated by thermo-receptors, activated by the rapid fall in skin temperature. Superimposed on the hyper-dynamic circulatory situation during short-term cold water immersion, it induces a further increase in blood pressure. Cold water immersion or simply an exposure might increase the propensity for stroke, especially in high risk individuals.
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