Singaporean and Thai doctors doing blood tests on workers here suggest the cause may be found in some combination of low potassium, poor diet, genetics, bad ventilation and stress.

Like those in the rest of the country, New Yorkers stayed up late watching the results, and some went to bed with a glimmer of hope that Mr. Kerry might yet find victory in some fortuitous combination of battleground states.

Acetaminophen and antihistamines are ingredients found in many nonprescription products and in some combination prescription medications.

Acetaminophen is an ingredient found in many nonprescription products and in some combination prescription medications (such as pain/fever drugs or cough-and-cold products).