title: Thunderclap headache without subarachnoid hemorrhage associated with regrowth of previously coil-occluded aneurysms.
abstract: 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.
authors.affiliation: Department of Radiology, Ohio State University Medical Center, Columbus, Ohio 43210, USA.
authors.forename: E P
authors.initials: EP
authors.lastname: Byrum
authors.forename: J M
authors.initials: JM
authors.lastname: McGregor
authors.forename: G A
authors.initials: GA
authors.lastname: Christoforidis
mesh_terms: D000328:Adult; D004621:Embolization, Therapeutic / Q000009:adverse effects* / Q000295:instrumentation*; D005260:Female; D051270:Headache Disorders, Primary / Q000175:diagnosis* / Q000209:etiology* / Q000517:prevention & control; D006801:Humans; D002532:Intracranial Aneurysm / Q000150:complications* / Q000517:prevention & control*; D008875:Middle Aged; D013345:Subarachnoid Hemorrhage / Q000150:complications