A 49-year-old woman visited her physician complaining of a fine hand tremor and of an increasing need to urinate. The woman, recently diagnosed with a psychiatric disorder, had been taking a psychotropic drug for three weeks. Physical examination disclosed cystic acne with folliculitis over the trunk and thorax.
Which of the following drugs could have caused the patient’s symptoms an signs?
A. Fluoxetine B. Haloperidol C. Lithium D. Fluphenazine E. Valproic acid F. Trazodone
Lithium-learning objective: describe the adverse effects of lithium.answer: cthe symptoms of the patient suggest that she was likely suffering from adverse effects oflithium. tremor is an adverse effect of lithium that is dose-dependent and can occur in up to60% of patients receiving high doses. when tremor is not disturbing, treatment is notnecessary. otherwise a concomitant treatment with a beta blocker can help. acne and folliculitisare other adverse effects of lithium that usually subside with the discontinuation of the drug.a, b, d, e, f) these drugs do not cause all the adverse effects reported by the patient.