Colts starting quarterback Anthony Richardson’s back spasms stem from an issue with a disc in his lower back, an issue that has bothered Richardson for a long time, according to the quarterback.

Colts quarterback Anthony Richardson missed Sunday’s loss against the Giants due to a back injury. Earlier in the week, Colts head coach Shane Steichen described the injury as soreness. He later clarified after the game that Richardson was dealing with bad back spasms.

Anthony Richardson revealed Wednesday he’s been dealing with back issues since he was in eighth grade, though the spasms never had been as severe as they were last week.