It must be hard to hear your family members dismiss you like that, and even accuse you of being possessed by a demon. In time, they may come to understand you better. When I was first diagnosed with bipolar, my parents thought that I was making it all up because I am high functioning and isolate myself when things get really bad so that no one can see it. It took one really severe depression that I couldn't hide, my brother being diagnosed with depression and OCD, and a psychotic suicidal mania that had me sent home from Europe, but...they believe me now!