• Dongmei An, Xuemei Zou, Tao Chen, Bo Yan, Ling Liu, and Dong Zhou.
• Department of Neurology, West China Hospital, Sichuan University, Chengdu, 610041, China.
• Epilepsy Behav. 2015 Dec 1; 53: 117-9.

ObjectiveThe objective of this study was to investigate the clinical characteristics of reflex epilepsy elicited by playing mah-jong in Western China.MethodsConsecutive patients with reflex epilepsy triggered by mah-jong from Jan 2011 to April 2014 were recruited at West China Hospital. Each patient underwent EEG recording and brain MRI scan. All clinical data were reviewed. Each patient had at least 12 months of follow-up.ResultsFifty-six patients were included, with majority of them being male (52/56, 92.9%). Mean age was 43.9 ± 10.0 years. Mean age at seizure onset was 35.1 ± 16.3 years. Mean duration of reflex epilepsy was 4.0 ± 2.2 years. The mean follow-up time was 32.0 ± 13.2 months. Seventeen patients (30.4%) took antiepileptic drugs. Regardless of the medication, all 14 patients who avoided playing mah-jong reached seizure freedom, and 22 of the 42 patients (52.4%) who still played mah-jong continued to have seizures (p<0.05).ConclusionsReflex epilepsy induced by mah-jong is a unique type of epilepsy in the Chinese population and usually occurs in adults after a long time lag of playing mah-jong. Avoiding the triggers is the most effective treatment for epilepsy.Copyright © 2015 Elsevier Inc. All rights reserved.

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