Multiple Personality Disorder I have heard many things about the disease called multiple personality disorder. I never know whether they are true or not. If these things aren’t true, then why do people make these accusations? I’ve also wondered what really goes on inside people’s heads when they have this disease. I want to know the truth behind this rare disease. A possible career for my future might be psychology. If I do choose this for a career, then I would most likely have a patient that has MPD. I will need to understand the concept behind this disease. I would also have to know how to work with someone that has it and how I could help hi