Hello everyone,
I remembered parts of a story I've read some time ago but I can't seem to find it in my bookmarks. Here is what I remember:

Dean was in hospital but the doctors didn't know what was wrong with him. They put him in quarantine and wore masks and special clothing when being in contact with him. Dean was pretty much out of it. He might have had flashbacks of hell (I'm not sure about that aspect), because they kept manhandling him. At one point they took a sample of his spinal fluid I think and Dean was panicking.

Sam didn't know where Dean was at first. Finally he made it to the hospital and rescued Dean by disguising himself as a doctor or nurse. He dropped some kind of smoke bomb in Dean's treatment room, so everybody fled. Sam took Dean from the hospital but Dean was very weak and had problems with his legs, because Sam moved him to early after the spinal fluid extraction.

I can't remember what was wrong with Dean in the end. Maybe some kind of supernatural illness.

Any ideas?

Thanks for your help in advance
ronjamaus

Edit: Found! Link in comments.