MINNEAPOLIS (WCCO) – One week after he left Sister Kenny Institute, high school hockey player Jack Jablonski is once again being hospitalized.

According to an update left on Jablonski’s CaringBridge site Wednesday evening, the paralyzed teenager was suffering from “issues that are common to people with spinal cord injuries.”

Jablonski’s parents said the decision was made to bring him to the emergency room after “several alarming incidents,” though they did not specify the exact nature of those incidents.

Jablonski left Sister Kenny last week, marking his first moment away from a hospital setting since his injury on Dec. 30, 2011. Jablonski was left with a spinal cord injury after he was checked from behind during a hockey game.

“A sense of darkness has hovered over us since last week when Jack was discharged from Sister Kenny,” wrote his parents on Wednesday. “The reality of his condition is a constant reminder that our lives will never be the same.”

His parents said this setback was especially difficult for their son because he was scheduled to throw the first pitch in Wednesday night’s Twins game at the Target Field.