There are many different diseases and disorders in this world. This is why the problem of misdiagnosis is so common. Even doctors can be confused by the symptoms present in a person.
With such a jumble of medical issues, it is always good to get a second opinion. Getting a second opinion has never been so hard as in the mental health field. A person there might be stuck with a set of doctors with the same mindset because they all work together. Transferring hospitals is often not an option when someone is in the throws of a mental health crisis.
So in all this, it is prudent to remember that not all hospitals are the same and have the same caliber of staff. If a hospital does not offer good treatment, then go to a different, more reputable one for a confirmation of diagnosis. Second and third opinions are often good in chronic illnesses when wading through the different diseases and disorders to find the right one is critical to an effective treatment plan.