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HK J Paediatr (New Series)
Vol 22. No. 2,
2017
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HK J Paediatr (New Series) 2017;22:107-109
Case Report
Methylphenidate-induced Orofacial Dyskinesia: Report of Two School-age Boys in Taiwan
MJ Lee, LJ Wang Department of Child and Adolescent Psychiatry, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan MJ Lee (李旻靜) MD LJ Wang (王亮人) MD, MPH Correspondence to: Dr LJ Wang Email: wangliangjen@gmail.com Received November 16, 2015
Abstract Methylphenidate (MPH) is a stimulant medication commonly prescribed in the management of attention-deficit/hyperactivity disorder. The possible adverse effects of MPH include decreased appetite, sleep disturbance, weight loss, headache, abdominal pain, anxiety and irritability. Some case reports have indicated that orofacial dyskinesias could develop under MPH administration. We report two cases of MPH-induced orofacial dyskinesia in Asian patients. The first patient took MPH 10 mg once daily for one week and developed lip-smacking and lip-biting with bleeding. The second patient developed oral-buccal dyskinesia immediately after he took one 10 mg dose of MPH. The purpose of this case report is to emphasize the importance of clinicians paying close attention to the risk of orofacial dyskinesia related to MPH at any point in the treatment, even when patients are receiving standard doses of this agent. Keyword : ADHD; Movement disorder; Psychostimulant Abstract in Chinese
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