偏头痛会造成头的一侧周期性头痛，持续时长可达4个多小时。
Migraine causes recurrent headaches on one side of the head that last for more than four hours.
这位医生同情他的周期性偏头痛病人，因为他自己也有此病。
The doctor has a fellow feeling for his migraine patients, since he suffers from it himself.
目的：偏头痛是慢性周期性疾病，对于其治疗包括急性期与预防性治疗。
Objective: Migraine is a chronic and periodic disease, while its treatment including acute stage and preventive treatment.
患有周期性偏头痛的人现在也许可以从天上找到病因。
People who suffer migraine headaches can now look to the sky as a possible cause.
偏头痛是一种周期发作的血管性头痛，多半是单侧性的，也可能是双侧性的。
Migraine is a type of Vascular Headache with a cyclical nature. Most of the time, the pain is one sided, but it is also possible to experience pain on both sides of the head.
虽然对于由风引起的周期性偏头痛我们还是束手无策，但贝克医生说很多他的病人感到很高兴，因为他们原先的怀疑得到了证实。
Although there may be little one can do about a migraine caused by winds, Dr. Becker says a lot of his patients are happy simply to know that their suspicions are confirmed.
虽然对于由风引起的周期性偏头痛我们还是束手无策，但贝克医生说很多他的病人感到很高兴，因为他们原先的怀疑得到了证实。
Although there may be little one can do about a migraine caused by winds, Dr. Becker says a lot of his patients are happy simply to know that their suspicions are confirmed.
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