Yes, so was gender identity disorder (i.e., transgender) which was often classified with pedophillia or body integrity disorder. There is no frame of reference

Yes, so was gender identity disorder (i.e., transgender) which was often classified with pedophillia or body integrity disorder. There is no frame of reference for psychology to use except society and general assessments of normality and expected behavior. That mean the only method to determine whether or not something is a disorder at all is a) determine the impact of the condition on the individual's ability to function, and b) determine whether or not the condition results in harm to the individual or others. These are both very subjective measures. The fact that we think we're more right today than we were yesterday is really pretty immaterial.