A 34-Year-Old Man Comes to the Hospital Due to Several

A 34-year-old man comes to the hospital due to several hours of difficulty swallowing, dry mouth, and blurred vision.  The patient has a history of major depression.  Examination shows mydriasis and poorly reactive pupils.  Electrodiagnostic studies reveal normal nerve conduction velocity but decreased compound muscle action potential (CMAP) .  Rapid, repetitive nerve stimulation leads to facilitation of CMAP.  Further review of this patient's medical history would most likely reveal which of the following?

A) Consumption of home-canned food
B) Diarrheal disease after eating undercooked poultry
C) Episodic diplopia and ptosis
D) Occupational exposure to insecticides
E) Recent consumption of puffer fish
F) Tricyclic antidepressant overdose

Correct Answer:

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