Editing Thunderclap headache (section)

==History==
The importance of severe headaches in the diagnosis of subarachnoid hemorrhage has been known since the 1920s, when London neurologist [[Charles Symonds]] described the clinical syndrome.<ref>{{cite journal | author=Symonds CP | title=Spontaneous subarachnoid hemorrhage | journal=Quarterly Journal of Medicine | year=1924 | volume=18 | issue=69 | pages=93–122 | doi=10.1093/qjmed/os-118.69.93 }}</ref><ref name=Longstreth>{{cite journal |vauthors=Longstreth WT, Koepsell TD, Yerby MS, van Belle G |title=Risk factors for subarachnoid hemorrhage |journal=Stroke |volume=16 |issue=3 |pages=377–85 |year=1985 |pmid=3890278 |url=http://stroke.ahajournals.org/cgi/reprint/16/3/377.pdf|doi=10.1161/01.STR.16.3.377|doi-access=free }}</ref> The term "thunderclap headache" was introduced in 1986 in a report by John Day and Neil Raskin, neurologists at the [[University of California, San Francisco]], in a report of a 42-year-old woman who had experienced several sudden headaches and was found to have an aneurysm that had not ruptured.<ref name=Schwedt/><ref>{{cite journal |vauthors=Day JW, Raskin NH |title=Thunderclap headache: symptom of unruptured cerebral aneurysm |journal=Lancet |volume=2 |issue=8518 |pages=1247–8 |date=November 1986 |pmid=2878133 |doi=10.1016/S0140-6736(86)92677-2|s2cid=7289947 }}</ref>