Zopiclone withdrawal: an unusual cause of delirium in the elderly.
We report a case of an elderly lady who was admitted for congestive heart failure. She developed delirium during the course of her hospital stay. Multiple investigations were performed but were unremarkable. Finally, a diagnosis of abrupt zopiclone withdrawal causing delirium was made. Zopiclone was resumed at a lower dose and delirium resolved completely.
Wong
Chun Pong
CP
Department of Medicine, Queen Mary Hospital, Hong Kong.
Chiu
Patrick Ka Chun
PK
Chu
Leung Wing
LW
D000368:Aged; D053961:Azabicyclo Compounds; D003693:Delirium / Q000139:chemically induced*; D005260:Female; D006801:Humans; D006993:Hypnotics and Sedatives / Q000009:adverse effects*; D010879:Piperazines / Q000009:adverse effects*; D013375:Substance Withdrawal Syndrome / Q000150:complications*
D053961:Azabicyclo Compounds; D006993:Hypnotics and Sedatives; D010879:Piperazines; C515050:zopiclone