- Pacers center Isaiah Jackson, who returned to action on Saturday after missing nearly four weeks with a concussion, talked to Dustin Dopirak of The Indianapolis Star about the severity of the condition. “Headaches,” Jackson said. “Fogginess. My thoughts were foggy. … My symptoms were severe. Light sensitivity. Sound sensitivity. I couldn’t even be around. I was bad. I was literally just in my room the blinds were shut. I had sunglasses on. It was bad.”