Snape nodded, and took his hand without another word to spread the ointment he'd brought along Draco's arm and begin to wrap the bandages tightly up from his elbow to his wrist. He gave a quiet, irritated curse when his fingers slipped about halfway down - his hands were shaking - but kept going. Grim determination was the only way to go forward, in times like these. Hopefully it wouldn't last very long. His jaw tightened when the pain seemed to flame up and throb.
He tried to be more careful with the arm that bore his Mark, but the efforts were probably useless. He wondered how long it would be before they found out what it was that had gotten the man's goat, this time. Something big, I hope.
"There." He fixed the end of the bandage, and capped the jar. "It will take a few days. Come back to me if you need help changing them." He didn't have the presence of mind for further questioning, unfortunately. All he wanted to do was shut himself back into his room.