Oh have you guys heard of the Rosenhan experiments---people pretended to have auditory hallucinations of just 3 words and then never again but despite being well they were forced to "take" anti-psychotics and admit that they were ill in order to get released. Apparently they just flushed their meds---man how things were different back then.
Then they faked out that they sent imposters when they didn't and the pdocs identified a number of people they thought were fakes..
Here is the Wikipedia article..
Rosenhan experiment - Wikipedia, the free encyclopedia