A 71 yo man presents with coarse tremor. He is on some meds. Which one can be the reason for
the tremor?
a. Lithium
b. Diazepam
c. Fluoxetine
d. Imipramine
e. Haloperidol
Ans. The key is A. Lithium. Actually in therapeutic dose lithium causes fine tremor but in
toxic dose it causes coarse tremor. So the probable answer is lithium.