I am looking for a specific fanfic I read several months ago. It may be ACD, RJD, or Grenada-verse. What I rememeber is that Holmes has a case and is running all over London with Watson. Watson is starting a relapse of his fever that he suffered from in the war and trying despeately hard to hide it from Holmes. I remember Watson worring about what good he would be to Holmes if he couldn't even try to keep up. Watson finally collapses chasing Holmes halfway up a hill in the middle of the street, frighteing Holmes half to death. Holmes takes him home and nurses him back to health feeling very guilty that he didn't notice. It could be a pre-slash, slash, or a gen fic(with heavy pre-slash overtones). That part I can't remember.
Does this sound familar to anyone?
Rairakku
Found: An Understanding by endsoftime. Thank you to equusentric and mick_gz for their wonderful help in finding this story.