Problem: Put aside what you "know" already about psychological states and conditions and look at the logic of the problem ok.
The question is...what is a mental disorder. Is it medical or is it possession by demons or is it neither. Let's say psychological sates and conditions are not biological, they are not medical. Could we still talk about them in a way that promotes understanding and acceptance? Do we need to align psychological states with medical states in order to be understanding and accepting?