I feel like usually telling someone to "get over" something is a bad choice, even if it is not a mental disorder - what a dismissive response to a person! Talk about invalidating whatever they are feeling. There are indeed many, many potential factors or causes to these sorts of disorders. I do agree that neurological changes may present in those afflicted - I do not think we can determine whether the neurological changes caused the illness, or were caused by it. Just like with the fecal disturbances. I guess if you try to treat the physical imbalances, and the disorder still manifests, then you maybe could conclude that more needed to be done? Or if you tried to treat only psychological and that did not help, vice versa. I think we are in agreement that the best treatment approach probably combines both options.