Mathew N T
Houston Headache Clinic, TX 77004.
Cephalalgia. 1993 Apr;13 Suppl 12:78-83. doi: 10.1177/0333102493013S1217.
Chronic tension-type headache, which is included in the International Headache Classification, is present in only a minority of patients who present with chronic daily headache. The majority have what is termed transformed migraine, with a history of distinct episodes of migraine in the initial years which progresses into chronic daily headache. These patients with transformed migraine exhibit mixed features of migraine and chronic tension-type headache. Two distinct types of transformed migraine are identifiable, namely those related to excessive intake of medications (drug-induced transformed migraine) and those unrelated to excessive use of medications. The clinical features of transformed migraine and the drug-induced variety are described. The need for revision of the International Classification to include chronic daily headache and the subtypes of transformed migraine is pointed out.
慢性紧张型头痛被列入国际头痛分类中，仅在少数慢性每日头痛患者中出现。大多数患者患有所谓的转化型偏头痛，最初几年有明显的偏头痛发作史，随后发展为慢性每日头痛。这些转化型偏头痛患者表现出偏头痛和慢性紧张型头痛的混合特征。可识别出两种不同类型的转化型偏头痛，即与药物摄入过多相关的（药物性转化型偏头痛）和与药物过度使用无关的。文中描述了转化型偏头痛和药物性转化型偏头痛的临床特征。指出了修订国际分类以纳入慢性每日头痛和转化型偏头痛亚型的必要性。
