Merredith had been diagnosed with at least three autoimmune disorders, including lupus and rheumatoid arthritis. Merredith’s immune system had turned on her own body as if it were itself an alien threat. She was almost never without a challenge, often running a low-grade fever twenty days or more every month, a few days of that as high as 100. It was just enough to create regular fatigue, not enough to knock her out completely.

