If you've heard news reports about concussions in the last year, it's probably been about football, where they're emphasizing player safety specifically surrounding concussions. Last year in Kansas City there was, however, some baseball-related concussion news.
Kansas City Royals second baseman Chris Getz suffered a season-ending concussion after being hit in the head with the ball. I understand the need to protect against concussions in football -- the contact is repeated. But baseball? Getz lays out his story to Bob Dutton of the Kansas City Star:
"Looking back, in hindsight it's even scarier," he said. "At the time, you're just thinking, ‘When is this going away? It's got to go away, right?' It is scary because you just don't know if it's going to go away or what the lasting effects are going to be. Am I going to have to deal with this forever? Is it going to end my career? But I was reassured by the doctors pretty early this was going to heal; that we just didn't know exactly when."
It's a fairly scary story, but also uplifting that he's recovered.
He was cleared fully in December and has free of any issues since then. I'd recommend reading the whole story.