In a COVID-19 "second-week crash," patients believe they're recovering but then feel much worse.
Business Insider reports people who've experienced them firsthand say second-week crash symptoms include shortness of breath and body aches.
Health experts don't know why only a subset of the population has this second-week crash.
It often results in a high fever, shortness of breath, and extreme fatigue.
There was a pressure, too — as if someone were squeezing my lungs like an accordion.
