I found this site while trying to find possible answers to recent problems I have been experiencing. I played football in high school and college and have had at least 4 concussions, and probably many others that were not reported. I am now 44 years old and teach high school history. My problems that I have been experiencing lately are loss of memory, especially in the short term, (this sometimes seems worse than others) increased irritability and emotional problems like breaking down at inappropriate times. My personal relationships have also seemed to suffer as well, in that I prefer to be alone rather than around my girlfriend, which is very unusual. Could this be PCS? Any help or input is most appreciated.