Cluster headache

Japanese: cluster headache（英語表記）clusterheadache

…In such cases, unlike trigeminal neuralgia, the area where the pain is occurring is often numb. Cluster headaches are characterized by intense, tearing pain around one eye, mainly in the middle of the night, which lasts for several minutes to a few hours and then subsides naturally, leaving no lasting impression, but similar attacks may occur repeatedly over a period of several weeks to several months. The cause is unknown, but it is thought to be a type of migraine, and ergot preparations are effective. …

From [Migraine]

...The duration of the headache is also longer than that of typical migraine. (3) Cluster headache It is common in men in their 20s and 30s, and headache attacks last 20 to 90 minutes, with attacks occurring approximately every 24 hours. Attacks last for several weeks, but there are also long-term remission periods lasting from several months to several years. ...

*Some of the terminology that refers to "cluster headache" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…このような場合には，三叉神経痛と異なって，痛みを生じている部分の感覚は鈍くなっていることが多い。群発頭痛cluster headacheは，主として夜中に片側の眼のまわりに切り裂かれるような激しい痛みを生ずるもので，数十分から数時間続いて自然におさまり，後にはなにも残らないが，数週間から数ヵ月にわたって，同様の発作がくり返される。原因は不明であるが，片頭痛の一種と考えられ，麦角製剤が有効である。…