| Summary: | Jinfeng Duan,1,2 Chengming Lao,3,4 Jingkai Chen,1,2 Fen Pan,1,2 Chenlin Zhang,3 Weijuan Xu,1,2 Weihua Zhou,1,2 Jianbo Hu,1,2 Desheng Shang,1 Manli Huang,1,2 Yi Xu1,2 1Department of Psychiatry, First Affiliated Hospital, College of Medicine, Zhejiang University, The Key Laboratory of Mental Disorder’s Management of Zhejiang Province, Hangzhou, People’s Republic of China; 2Brain Research Institute of Zhejiang University, Hangzhou, People’s Republic of China; 3College of Medicine, Zhejiang University, Hangzhou, People’s Republic of China; 4Yiwu Mental Health Center, Yiwu, People’s Republic of China Abstract: Memantine, an N-methyl-D-aspartate receptor antagonist, is a well-established treatment option for moderate-to-severe cognitive impairment related to Alzheimer disease. Recently, growing evidence has indicated memantine might also be effective in treatment of affective disorders. The common drug-induced adverse events of memantine include confusion, dizziness, drowsiness, headache, insomnia, and agitation. Herein, we presented a case of a 73-year-old female patient with vascular neurocognitive disorder, who developed a manic episode after taking memantine. Keywords: memantine, depression, dementia, manic episode
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