It really doesnt take that much force to get a concussion, not sure why people keep saying this
Yes it really does. If it didnt they would be more common. That's why they're very uncommon outside of contact and combat sports
But dodgeball is a sport where youre throwing a ball hard at other people... And if it hits a head, it may cause one. Apparently, its not that uncommon in dodgeball. Usually, people will try not to aim for the head. Also, most people try to protect their face, which probably lessens the amount of people who get hit in the head. I think they say it takes about 95 gs of Force to cause a concussion. And most football players get hit at 103 for comparison. But throwing a dodgeball is probably a good amount of Gs. Its fairly light, but has som me weight behind a hit. And depending on how it hit the child, it may cause one easily. Also, based on the medical condition, it may take less force to cause a concussion. Not to mention, he was really young, which could probably help...
And football players constantly get concussions but they're also walking refrigerators