Stephen J.LurieMD, PhD, Senior EditorIndividualAuthor
In Reply: Acute gastrointestinal illness prompted
the patient to use cao gío (coin rubbing), and a few hours later, he
had onset of confusion that led to his admission to our emergency department.
We did not imply that camphor intoxication explained all signs and symptoms
of the patient. We agree that there is no known association of hyponatremia
and camphor intoxication. The probable cause of hyponatremia was the gastrointestinal
It is possible that hyponatremia could explain our patient's altered
mental status, although the confusion was temporally associated with the coin
rubbing. At admission vomiting and diarrhea were no longer present. While
we asserted that the elevated liver enzymes were caused by camphor intoxication,
more importantly, they cannot be attributed to hyponatremia.
Bächli EB, Rampini SK, Schneemann M. Coin Rubbing and Camphor Intoxication—Reply. JAMA. 2002;288(12):1471. doi:10.1001/jama.288.12.1469