My son, shown above on his recent 7th birthday, has the same stomach as my husband. A few weeks ago I got a call from the elementary school. I was surprised because my son had just barely arrived at school. It seems that while they were waiting outside to be let into their classroom for the day (a barbaric practice in this climate, I think--but I digress) a female classmate pushed him and he hit his nose on the door. This resulted in a small nosebleed. They assured me that he was fine--the bleeding had stopped, they had cleaned him up, and he was going to go to class--but he wanted to talk to me first. So we had a short conversation, I sympathized and made sure he was going to be alright. I think this will be the end of the story. But no, about 45 minutes later the school calls again. This time they report that my son has thrown up--all over the floor of the office, no less. They said he arrived looking very pale and greenish, saying he didn't feel well but before they could get him to the nurse's office, he hurled his breakfast all over the floor. They told me he looked terrible and I needed to come get him. I wondered aloud if he had swallowed some blood from the nosebleed, causing him to feel queasy, but they said, "No, just breakfast. He is definitely sick!" As I was driving to the school, it occurred to me that maybe the nausea was a result of hitting his head--maybe a concussion? When I got there, the nurse had had the same thought as I was in transit so she had checked his pupils (they were O.K.) and gave me a sheet on signs of a concussion, instructing me to take him to a doctor immediately if he had any other symptoms of concussion. They were right, my son DID look terrible. He was very pale with a slighly greenish sheen. On the way home, I began questioning him about when he started feeling sick. "Did you feel sick at all this morning, before school?" No. "Did you start feeling sick when you had the nosebleed?" No. "Well, when did you start feeling sick?" He says, "I went to class and some of the kids were talking to me about times they got hurt--bleeding and stitches and stuff and it started to make my stomach hurt." He got sick because some kids were talking about getting stitches. Sure enough, within ten minutes of getting home, he was fine! His color returned to normal and he was running around and playing and eating with a normal appetite the rest of the day. He didn't have a concussion or the stomach flu, after all. But after the morning he had, I figured he had earned a day off from school.