Unknown disease causes woman to grow fingernails instead of hair

In 2009, student Shanyna Isom experienced an allergic reaction to a steroid treatment she received for an asthma attack. Since then, she's been afflicted by a medical disorder that's left physicians at Johns Hopkins University stumped. What was initially mistaken for eczema and a staph infection has left Isom with… » 8/10/12 9:35am 8/10/12 9:35am