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a few of the known pieces of this puzzling phenomena. Ischemia in the heart due to prolonged coronary vasospasm can lead to angina, myocardial infarction and even death. Vasospasm in the hands and fingers due to prolonged exposure to vibration (30 - 300 Hz) and triggered by cold can lead to Hand-arm vibration syndrome in which feeling and manual dexterity are lost.

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