cluster headache

cluster-headache的词性：
n.（名词）

1. A severe recurring headache that is associated with the release of histamine and is characterized by sudden sharp pain, watering of the eye, and runny nose on one side of the head.
偏头痛：一种严重的复发性头痛，与组织胺的释放有关，症状是头的一侧突发剧痛，流眼泪、流鼻涕