title: Methylphenidate-induced orofacial and extremity dyskinesia.
abstract: In this paper, we report the case of a 6(1/2)-year-old male patient diagnosed with attention-deficit/hyperactivity disorder (ADHD) who developed orofacial and extremity dyskinesias immediately after methylphenidate treatment. The episode lasted 5 hours, peaking in intensity 2 hours after the medication was administered before gradually subsiding. Five hours after the methylphenidate was administered, the child became extremely irritated and aggressive, which lasted approximately 2 hours. The patient's general intelligence (IQ) was measured to be below the normal range. The potential relationship between methylphenidate intake and the development of dyskinesia calls into question different mechanisms involving drug-receptor interaction or individual drug sensitivity related to a lower IQ. Our case report has practical implications for physicians by raising their awareness of dyskinesia as a potential side effect of methylphenidate treatment.
authors.affiliation: Vadaskert Child and Adolescent Psychiatry Hospital and Outpatient Clinic, Budapest, Hungary. jubalazs@freemail.hu
authors.forename: Judit
authors.initials: J
authors.lastname: Balázs
authors.forename: Márta
authors.initials: M
authors.lastname: Besnyo
authors.forename: Júlia
authors.initials: J
authors.lastname: Gádoros
mesh_terms: D001289:Attention Deficit Disorder with Hyperactivity / Q000188:drug therapy*; D000697:Central Nervous System Stimulants / Q000009:adverse effects*; D002648:Child; D004409:Dyskinesia, Drug-Induced / Q000209:etiology*; D006801:Humans; D008297:Male; D008774:Methylphenidate / Q000009:adverse effects*
chemical_list: D000697:Central Nervous System Stimulants; D008774:Methylphenidate