偏头痛是一种常见病,但由偏头痛引起发作性眩晕——偏头痛替代征则少见,现报告3例。例1 女 26岁。三年前患偏头痛,半年后每次头痛发作均伴有视物不清、眼前发黑、眩晕、恶心、耳鸣,有时伴有双下肢无力及四肢感觉异常等,无意识障碍。头痛消失后,其它症状也随之逐渐消失。开始时发作时间较短,几分钟到十几分钟不等, Migraine is a common disease, but migraine-induced paroxysmal vertigo-a rare replacement of migraine-is now reported in 3 cases. Example 1 Female 26 years old. Three years ago suffering from migraine headache, half a year after each headache are accompanied by blurred vision, black eyes, dizziness, nausea, tinnitus, and sometimes accompanied by weakness in both limbs and limbs, abnormal sensations, unconsciousness. After the headache disappears, other symptoms also disappear. The beginning of the attack time is short, ranging from a few minutes to ten minutes,