由于对偏头痛没有特异的试验室检查,所以对它的描写必须根据临床表现。一个普通引用的概念是“一种家族性疾病,其特征为反复发作头痛,而且发作强度、频率及时程的可变性都很大。头痛一般为单侧性,并常伴有厌食、恶心及呕吐。上述特征,在每次发作中或每一个病人并非全部具备”。 Because there is no specific laboratory test for migraine, the description of it must be based on clinical manifestations. One common reference to the concept is “a familial disease characterized by recurrent headaches and the variability in the intensity, frequency and duration of the episodes, which are usually unilateral and often accompanied by anorexia, nausea and vomiting These features are not always available in every episode or every patient. ”