When Allison Fite was 16, she couldn't stop falling asleep in class. Doctors told her it was from a severe sinus infection, but it never really went away. For the next decade she struggled with infection after infection, taking antibiotics and decongestants. "Having these sinus problems and not being able to breathe was debilitating," she says.
Fite, now 27, couldn't figure out why this kept happening. Neither could any of her doctors. They told her she had allergies, but "then the tests would come back and they'd be like, 'Huh. You don't have allergies,' " she says.