I'm not sure if it belongs in this thread since it's not flattening of affect strictly speaking, or the "Odd PCS symptoms" thread, but here it is anyways.

The other day, TSN (Canadian version of ESPN) aired an interview with former Canadian Football League star quarterback Matt Dunigan about his battle with post concussion syndrome. One of the emotional changes that was effected by PCS was ... losing his sense of humour.

The video for the interview: http://watch.tsn.ca/featured/clip498028#clip498028