Tests
After seeing Gilian again, the doctor started to take her condition a little more seriously. He ran blood and allergy tests to hopefully find any disease or intolerance. But the tests came back with the same result: Gillian was perfectly healthy.
They didn’t have a diagnosis, but they decided to try an “elimination” approach, so Gillian was put on several different antibiotics. Hopefully, they would then find out what was really going on.