While yet another winter storm system swept across much of the U.S. this week, the weather wasn't the only thing downright chilly. Several health-care stocks that had been on hot streaks took some deep plunges into icy waters over the past few days. 

The worst performers in the health-care sector fell for very different reasons. One encountered analyst skepticism about clinical study results. Another dropped after a negative online article made waves. A thumbs-down from an FDA advisory committee took its toll on one stock. 

Which three health-care stocks were the most horrendous this week? Find out by clicking through the following slideshow.

 

Keith Speights and The Motley Fool have no position in any of the stocks mentioned. Try any of our Foolish newsletter services free for 30 days. We Fools don't all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.