If you’ve ever watched two episodes of House M.D., you know the routine. The doctors are on a mad rush to get a diagnosis, throwing one treatment after another at the symptoms to see if it works. All tests have been inconclusive, all theories have been shot down, and the only thing that can save the day is the last minute epiphany of a brilliant and eccentric doctor. If you take away that last step you get a somewhat less interesting show where the patients always die, but also a much better metaphor for the psychiatric industry.
Let’s put on our diagnostic whiteboard the term “chemical imbalance”. What is the cause? Unknown. What are the physiological signs of a chemical imbalance? Since there is no control model for a chemically balanced brain, there are no physiological signs of an imbalance.