My daughter suffered Post Concussion Syndrome after falling from her horse almost 12 mths ago & she was wearing a helmet. The headaches were awful! medication made her drowsy & she had to change her job to a less stressful one....looking at the PCS site had some scary reading, fortunately she is making a complete recovery. One good thing was the Nurosurgeon told her to keep doing the things she likes & that included riding. An excellent article. Ride safe everyone!