I mentioned in another post a while back that I play reasonably high level recreational table tennis (ping pong) and have done leagues and tournaments. It's one of those sports where you swing the paddle to finish fairly close to the forehead in a 'salute' style of motion.

A few days ago I was playing against a guy who puts a lot of underspin (backspin) on the ball and so to get the ball over the net can require a good upward 'lift' to keep your ball from going into the net. And so on one particular shot, I might have swung a little too quickly and vertically and during the swing follow-through I managed to hit my right temple with the paddle. The paddle blades are made of wood and weigh a little over a half pound. I swung pretty fast as well since it was an attacking shot - the part of the paddle that hit me was the wood and not the softer part of the paddle where there is a rubber material.

The immediate symptom afterwards was a higher pitched noise that lasted for a few seconds. I've had tinnitus for several years and it kind of sounded like perhaps a slightly higher pitch and louder version of it. It went away after several seconds. The spot on my temple was fairly close to my ear and so I'm not sure if I hit the ear or just close to it on the side of my head (temple). Didn't get nauseous or light sensitivity, but I've had some moderate headaches in the four days since.

Does it sound like it could be a concussion? I'm mainly asking because I do other activities like volleyball and am trying to gauge risk of a second impact. I'm not sure if the hit from playing ping pong was subconcussive, an actual concussion., or just a 'setback.'