Enter for a chance to win a Braun ThermoScan 5 thermometer. Since the eardrum shares the blood supply of the brain’s temperature control center, the ear canal allows for a more accurate reading of the body’s core temperature. Haiden has been fighting a cold for about a week and I suspected his overall fussiness was due to not feeling well. But it can be hard for kids to verbalize their symptoms. Sometimes they just feel crummy and they can’t explain it. As it turns out, having to take a temperature in the ear of a baby (or an uncooperative child) isn’t always easy. In addition to squirming, there’s also just sensitivity to touch to consider. And sleep! Once you get a sick baby or kid to sleep, you generally don’t want to wake her up.