beriberi

詳細解釋：

ber.i.ber.i

n.（名詞）
A disease caused by a deficiency of thiamine, endemic in eastern and southern Asia and characterized by neurological symptoms, cardiovascular abnormalities, and edema.
腳氣：一種由於缺乏維生素B引起的疾病，特別流行於東南亞一帶，其特點為有神經病症狀、心血管失常和浮腫

來源：
Singhalese [reduplication of] beri [weakness]
辛伽羅語 [] beri的重迭語素 [虛弱]