title: Adult aqueductal stenosis presenting as a thunderclap headache: a case report.
abstract: Thunderclap headache is well known to be a presenting feature of a variety of causal events. Indeed, a primary form is considered in the International Classification of Headache Disorders-II, but such diagnosis must be made only after exclusion of a possible secondary cause. We report a case of late-onset idiopathic aqueductal stenosis presenting with thunderclap headache, in the absence of abnormal neurological findings or indirect signs of raised intracranial pressure. The patient recovered completely after endoscopic third ventriculostomy. This case indicates primary aqueduct stenosis as a possible, never previously reported, cause of thunderclap headache.
authors.affiliation: Department of Neurology, Santa Maria della Misericordia Hospital, piazza Santa Maria della Misericordia 15, 33100 Udine, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Mucchiut
authors.forename: L
authors.initials: L
authors.lastname: Valentinis
authors.forename: F
authors.initials: F
authors.lastname: Tuniz
authors.forename: B
authors.initials: B
authors.lastname: Zanotti
authors.forename: M
authors.initials: M
authors.lastname: Skrap
authors.forename: P
authors.initials: P
authors.lastname: Bergonzi
authors.forename: G
authors.initials: G
authors.lastname: Zanchin
mesh_terms: D000328:Adult; D002535:Cerebral Aqueduct / Q000473:pathology* / Q000601:surgery; D003251:Constriction, Pathologic / Q000150:complications; D005260:Female; D051270:Headache Disorders, Primary / Q000209:etiology* / Q000601:surgery; D006801:Humans; D006849:Hydrocephalus / Q000150:complications* / Q000601:surgery; D008279:Magnetic Resonance Imaging; D020542:Third Ventricle / Q000473:pathology / Q000601:surgery; D014696:Ventriculostomy