My most recent concussion and the 1st time PCS was 3 months ago and the constipation (without any real discomfort) started immediately. I was on pain meds then and sporadically since and I guess they could indeed be the cause but I've never had this issue with them before and I've been taking pain meds all my life due to migraines. What's new is the tremendous gastrointestinal discomfort with bloating and what feels like gas pain and cramps, but little or no gas or movement and for the past two days little break from it. Pain meds are butalbital for migraines and Aleve or Advil for concussion headaches. Also something for dizziness and nausea but don't remember that one.

thanks,
Wade