I had a brief stint with anti-depressants and cognitive talk therapy following my divorce. I reported this to the AME when I applied for my medical. He explained that part of the issues with some medications is that they behave differently at altitude than they do on the ground.
All I had to do was get copies of the treatment records faxed to my AME, as well as a letter from the treating physician who indicated that I was stable, no recurrences and that I had been "treated to remission."
Only thing it cost me was a second office visit to the AME once that had been completed, and my medical was issued.
My AME did tell me that that was the end of it - never had to worry about it again. Only caveat was that if I ever did return to counseling or require medication, I'd be required to ground myself and report it.