of the life claims declined, 0.85 per cent were due to mis-representation and 0.16 per cent due to the definition of terminal illness not being met. . of migraine. more than 4 million of them have at least 15 migraine days each month. even though many drugs prevent and treat these headaches,.treatment delays are also causing needless anxiety and distress to patients as well as putting lives at serious risk (file pic)..