Some weeks back I was driving into town and picked up on the radio an interview with Jesse Bering, the author of 'Perv - the sexual deviant in all of us' (I would have included a link but I couldn't get it to work properly). It was quite interesting. He started off by explaining that the broader traditional meaning of perversion had tended to be taken over by the various forms of paraphilia to which people are prone, and I remember thinking then that gender dysphoria and most of the various ways in which people with it seek to assuage or sublimate it should not be considered perversion, although I can see the argument that cross dressing - for sexual excitement rather than dysphoria relief - can and possibly should be regarded as a paraphilia (which is after all only a synonym for sexual perversion). This whole subject is as usual plagued with semantic problems. 