PT  - JOURNAL ARTICLE
AU  - Byrum, E.P.
AU  - McGregor, J.M.
AU  - Christoforidis, G.A.
TI  - Thunderclap Headache without Subarachnoid Hemorrhage Associated with Regrowth of Previously Coil-Occluded Aneurysms
AID  - 10.3174/ajnr.A1382
DP  - 2009 May 01
TA  - American Journal of Neuroradiology
PG  - 1059--1061
VI  - 30
IP  - 5
4099  - http://www.ajnr.org/content/30/5/1059.short
4100  - http://www.ajnr.org/content/30/5/1059.full
SO  - Am. J. Neuroradiol.2009 May 01; 30
AB  - SUMMARY: Thunderclap headache is a sudden, high-intensity headache often associated with subarachnoid hemorrhage secondary to a ruptured intracerebral aneurysm. A variety of less common causes have now been described. This report presents the cases of 2 patients who experienced thunderclap headache after regrowth of an aneurysm, without hemorrhage of previously coiled aneurysms. Thunderclap headache after endovascular occlusion of a ruptured intracranial aneurysm may be a symptom of aneurysm regrowth and may warrant angiographic investigation.