Kids are notoriously resilient; they always seem to pick themselves back up after a rough fall or a painful-looking tumble. This is especially true for young athletes; kids in sports seem to injure themselves all the time, only to wind up with a few minor bumps and bruises. But what about when childhood injuries from sports are more serious?

Colds are common and they don’t always necessitate a trip to the doctor. Most of the time you can wait it out over the course of a week with plenty of liquids and rest. But how do you know when your cold is something worse?

A bad cold can leave you feeling weak,