Question

A patient with a history of lithium use presents with copious amounts of dilute urine. What is the most likely diagnosis?

1) Diabetes insipidus
2) Diabetes mellitus
3) Renal failure
4) Urinary tract infection

Answer 1

The most likely diagnosis for a patient with a history of lithium use presenting with copious amounts of dilute urine is diabetes insipidus.

Step-by-step explanation:

The most likely diagnosis for a patient with a history of lithium use presenting with copious amounts of dilute urine is diabetes insipidus.

Diabetes insipidus is a condition characterized by excessive thirst and urination, caused by a deficiency of anti-diuretic hormone (ADH) or resistance to its effects.

In this case, the presentation of copious amounts of dilute urine is consistent with the polyuria seen in diabetes insipidus.