Symptoms of thyrotoxicosis may be mimicked by:

Correct Answer: A

Rationale: Anxiety states mimic thyrotoxicosis with tachycardia, sweating, and nervousness.

Correct Answer: C

Rationale: Sickle cell anemia causes cholelithiasis (pigment stones) and joint pain from vaso-occlusion.

Correct Answer: A

Rationale: Dubin-Johnson syndrome (conjugation defect) increases direct bilirubin.

Correct Answer: A

Rationale: Diabetes accelerates arteriosclerosis due to hyperglycemia and vascular damage.

Correct Answer: B

Rationale: Adrenalectomy eliminates adrenal catecholamine production, not urinary levels if extra-adrenal sources (e.g., sympathetic nerves) persist.