"I ran all the way to the main gate, and then I waited a second till I got my breath. I have no wind, if you want to know the truth. I'm quite a heavy smoker, for one thing—that is, I used to be. They made me cut it out. Another thing, I grew six and a half inches last year. That's also how I practically got t.b. and came out here for all these goddam checkups and stuff. I'm pretty healthy though. (1.10)"
Check out those words "they" and "here." It's ambiguous, but we have an idea that "they" are some sort of professionals taking care of Holden, and "here" is some sort of institution or place that gives "checkups and stuff." Again, more hints that something went wrong with Holden. Clever, clever.Footnote:
1 Shmoop Editorial Team. "The Catcher in the Rye Madness Quotes." Shmoop. Shmoop University, Inc., 11 Nov. 2008. Web. 4 Dec. 2016.