"If you've traveled outside the U.S. recently, or sent your U.S.-made products abroad, you've probably noticed that the dollar is getting stronger. The stronger dollar is the sign of a healthier U.S. economy, but its strength has the potential to erode growth."

"There are a number of factors behind the dollar's rise, says economist Jens Nordvig, a currency expert at Nomura Securities. The main one is the health of the U.S. economy."

"'When you compare the U.S. economy to the rest of the world, you really have a situation where there's a pretty dramatic outperformance of U.S. growth relative to European growth, Japanese growth, or global growth in general,' Nordvig says."