丛集性头痛，也被称为"自杀性头痛"，是一种神经性疾病，其突出特点在于极端的疼痛。其名称中的“丛集性”来自于这种头痛倾向于周期性的发作，而发作后一段时间内又会自发缓解。本疾病的原因目前还不明确。本疾病大约会影响到0.1%的人群，而男性更易罹患这种疾病。

Cluster headache (CH) is a neurological disorder characterized by recurrent, severe headaches on one side of the head, typically around the eye. There are often accompanying autonomic symptoms during the headache such as eye watering, nasal congestion and swelling around the eye, typically confined to the side of the head with the pain.