title: Thunderclap headache.
mesh_terms: D002340:Carotid Artery Diseases / Q000000981:diagnostic imaging*; D002343:Carotid Artery, Internal; D002533:Cerebral Angiography; D005260:Female; D006261:Headache / Q000209:etiology*; D006801:Humans; D002532:Intracranial Aneurysm / Q000000981:diagnostic imaging*; D008875:Middle Aged