He might have had a stop at the infirmary on his way to the SHU. If he had cash on him he will likely lose some privileges for a while maybe even get shipped to a prison further from home.
https://www.inmateaid.com/ask-the-inmate/my-friend-was-sent-to-the-infirmary-is-that-for-medical-only-because-i-was#answer
Accepted Answer Date Created: February 08,2016