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An adjective for grading intensity on a relative scale describing a symptom, outcome or event. Note: The term \'severe\' is often used to describe the intensity (severity) of a specific event (as in mild, moderate, or severe myocardial infarction); the event itself, however, may be of relatively minor medical significance (such as severe headache). This is not the same as \'serious,\' which is based on patient/event outcome or action criteria usually associated with events that pose a threat to a patient\'s life or functioning. Seriousness (not severity) serves as a guide for defining regulatory reporting obligations. [After ICH E2A, B] See also serious adverse event and serious adverse drug reaction.
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