Question

scenario: a patient on lithium therapy for bipolar disorder presents with tremor, confusion, and increased thirst. question: what is the likely diagnosis? lithium toxicity. hypothyroidism. dehydration. diabetes insipidus.

Explanation:

The patient is on lithium therapy for bipolar disorder and has tremor, confusion, and increased thirst. Lithium toxicity is a common complication of lithium therapy, and its symptoms include tremor, confusion, and polyuria (which can lead to increased thirst). Hypothyroidism (from lithium use) has different symptoms, dehydration is more about fluid loss without the lithium context, and diabetes insipidus from lithium is less direct than acute toxicity here. So the likely diagnosis is lithium toxicity.

Answer:

A. Lithium toxicity.