You need to look into the risk of damage from head impacts. The sub-concussive impacts are the most dangerous since they are not recognized at the time of injury. This makes it so that you continue to subject your brain to more sub-concussive impacts.

An example for you to consider is simple. A corner kick in soccer to a header into the goal can be quite an impact. The brain damage for a corner kick header is minor compared to the many small impacts from a header drill of players heading the ball to each other in a small circle.

If you continue to subject your brain to such impacts, you may find that coordination will become the least of your struggles. Those of us with cognitive and memory dysfunctions can explain how frustrating they can be.

You would not need to get your medical history to determine if you have proprioception dysfunctions. Anybody who can do a good rehab neurological motor function test should be able to help you. An occupational therapist or physical therapist may be able to help you. You would want to check with a neuro-rehab hospital or clinic.

You can do some testing yourself. Standing up and look around to see where different objects are within touching range. Close your eyes and try to touch different objects around you without any other reference. Try it with both sides. If you do better with your left side than your right side, you have proprioception dysfunctions on your right side. This is what a police officer is testing when they have you close your eyes and touch your nose.

My best to you.