title: Williams syndrome with a "twist".
abstract: Williams syndrome is a rare genetic condition with multisystemic involvement, caused by a microscopic deletion in the chromosome band 7q11.23. We describe the first case of a toddler with Williams syndrome who developed Benign Paroxysmal Torticollis (BPT), a benign dystonic disorder of unknown aetiology.
authors.affiliation: Rheumatology Department, Great Ormond Street Hospital for Children NHS Trust, Great Ormond Street, London WC1H 3JH, UK.
authors.forename: Despoina
authors.initials: D
authors.lastname: Maritsi
authors.forename: Lydia
authors.initials: L
authors.lastname: Kossiva
authors.forename: George
authors.initials: G
authors.lastname: Vartzelis