title: Visual Hallucinations in a Patient with Horner's Syndrome Secondary to Internal Carotid Dissection.
abstract: A 67-year-old female presented with post-ganglionic Horner's syndrome. In addition to the classical symptoms of Horner's syndrome, the patient reported experiencing frightening complex visual and auditory hallucinations on two different occasions. Magnetic resonance angiography of the cerebrum, neck and upper thorax revealed internal carotid dissection. The symptoms and hallucinatory experiences resolved soon after antiplatelet therapy was commenced. We propose peduncular hallucinosis as the underlying mechanism.
authors.affiliation: Clinical Eye Research Unit, Department of Ophthalmology, Copenhagen University Hospital Roskilde, Roskilde, Denmark.
authors.forename: Amardeep
authors.initials: A
authors.lastname: Singh
authors.affiliation: Clinical Eye Research Unit, Department of Ophthalmology, Copenhagen University Hospital Roskilde, Roskilde, Denmark.
authors.forename: Panteleimon
authors.initials: P
authors.lastname: Mortzos
authors.affiliation: Clinical Eye Research Unit, Department of Ophthalmology, Copenhagen University Hospital Roskilde, Roskilde, Denmark.
authors.forename: Torben Lykke
authors.initials: TL
authors.lastname: Sørensen
keywords: Carotid artery dissection; Cerebral ischemia; Horner's syndrome; Peduncular; Visual hallucinations; hallucinosis