Think Like a Doctor: Thinner –

The Challenge: Can you figure out what is wrong with a 58-year-old woman with bad arthritis who develops a terrible wasting illness after what looked like a simple cold?

Every month, the Diagnosis column of The New York Times Magazine asks Well readers to try to figure out a real-life diagnostic mystery. Below you will find the details of a case involving a middle-age woman with terrible arthritis who catches a cold that seems to turn into something much worse. Over the course of just a few months she loses 30 pounds and much of her strength. Can you figure out why?</blockquote>