Interesting article: http://danariely.com/2010/08/02/how-we-view-people-with-medical-labels/

One reason why it's a good idea someone with OCD (or for that matter, Asperger, psychosis, autism, paranoia, schizophrenia — whatever) should make sure new acquaintances know of his/her condition:

I suppose that being presented by a third party, as in the example, should make a difference when compared to self-labeling (which may sound like excusing oneself)?