title: Mercury intoxication presenting with tics.
abstract: A 5 year old Chinese boy presented with recurrent oral ulceration followed by motor and vocal tics. The Chinese herbal spray he used for his mouth ulcers was found to have a high mercury content. His blood mercury concentration was raised. Isolated tics as the sole presentation of mercury intoxication has not previously been reported.
authors.affiliation: Department of Paediatrics, The Chinese University of Hong Kong, 6th Floor, Clinical Sciences Building, Prince of Wales Hospital, Shatin, Hong Kong SAR, China. Albertm68mcli@yahoo.com
authors.forename: A M
authors.initials: AM
authors.lastname: Li
authors.forename: M H
authors.initials: MH
authors.lastname: Chan
authors.forename: T F
authors.initials: TF
authors.lastname: Leung
authors.forename: R C
authors.initials: RC
authors.lastname: Cheung
authors.forename: C W
authors.initials: CW
authors.lastname: Lam
authors.forename: T F
authors.initials: TF
authors.lastname: Fok
mesh_terms: D002675:Child, Preschool; D004365:Drugs, Chinese Herbal / Q000009:adverse effects*; D006801:Humans; D008297:Male; D008628:Mercury / Q000097:blood; D020262:Mercury Poisoning, Nervous System / Q000209:etiology*; D019226:Oral Ulcer / Q000188:drug therapy; D020323:Tics / Q000139:chemically induced*
chemical_list: D004365:Drugs, Chinese Herbal; D008628:Mercury