Criminal Minds Question

Am I forgetting something or did they kind of just drop the whole Reid's unexplained headaches and freakout over schizophrenia storyline this past season (S7)? Because I don't remember it ever coming up. Or was it resolved in S6 and I just don't remember that episode (entirely possible. I was insanely busy that spring getting ready for graduation and I may have missed a couple of episodes after Prentiss "dies").