title: A 50-year-old with rapid neuropsychiatric deterioration and choreiform movements.
authors.affiliation: Department of Neurology, Queen Elizabeth University hospital, Glasgow, UK.
authors.forename: Graham Andrew
authors.initials: GA
authors.lastname: Mackay
authors.affiliation: Department of Gastroenterology, Hairmyres hospital, East Kilbride, UK.
authors.forename: Stewart
authors.initials: S
authors.lastname: Campbell
authors.affiliation: Department of Neuro-radiology, Queen Elizabeth University hospital, Glasgow, UK.
authors.forename: Ravi
authors.initials: R
authors.lastname: Jampana
authors.affiliation: Mental Health and Wellbeing, Sackler Institute, Neurology block, Queen Elizabeth University hospital, Glasgow, UK.
authors.forename: Jonathan
authors.initials: J
authors.lastname: Cavanagh
keywords: Central Nervous System; Chorea; Cognition; Encephalitis; Lupus vasculitis