Just joined today after seeing posts such as this. My 16 year-old son is 2.5 and 3 years post concussion - 1st concussion hit back of head hard on the ice similar to Mokey, with symptoms like many of those reported by various people here. 2nd concussion less severe but same.

He has a long litany of issues, and has seen more MDs, Chiropractors and Therapists than I have in my lifetime. He has been able to get along moderately well for the past year or so, but 6 days ago had a peculiar sudden onset visual focusing problem. ALL neurological testing is normal except for the fact the about every 1-2 seconds his eyes switch from sharp focus to blurry (for 6 days straight). His eyes have this accommodation pulsation NOT synchronized with his heart beat (with moderate headache), but no pupillary or convergence symptoms, no vestibular or nausea symptoms. The only thing that stopped it for a couple of hours was the eye-drops that the eye doctor used to paralyze his pupillary and focusing muscles.

We cannot yet rule out migraine or anxiety, but my hunch is that it is a brainstem problem related to his prior concussions, possibly aggravated by a more recent "unrecognized" occurance. Our biggest frustration is trying to figure out who is most appropriate specialist to see, and what kinds of tests can be done to help determine the root cause, whether or not anything can be done to solve the problem.

If anyone has suggestions of what type of doctor we should find, or knows of someone with similar symptoms that information would be greatly appreciated.