Catherine Whelan | New Hampshire Public Radio

Catherine Whelan

For Marjorie Roberts, it started on March 26.

The healthy, 59-year-old life coach in Atlanta says it started as a normal day. She went out to get the mail. As she walked back to her apartment, she lost her balance. Odd for her, but she didn't think much of it.

By evening, "everything came down on me like a ton of bricks," she says. Extreme fatigue was the first symptom among several. Her long ordeal was just beginning. "I had no idea what I was in for."