Dr Ramsay used to talk about the emotional lability in some of his patients. I remember a story about a professional male patient who came to his office and cried. The impression I got was that the patient cried because he had a terrible disease but also that the normal restraints on emotional expression had been changed somehow. I'm probably not describing this correctly. When I was first ill I also cried. Was much more emotional than normal and it felt part of the infection and delirium that I had when the viral symptoms were so acute and severe. As the fevers lessened so did the emotional crying. I still have a terrible disease but I'm not depressed. Could this be extrapolated somehow into "mental illness" ? I wasn't depressed then but I certainly felt emotional different. There are no real tests for mental illness such as depression so it could be one bad instrument meeting another. Poke someone with the flu and see how they react emotionally? There must be descriptions of viral diseases that make people feel more emotional and cry etc.