In the classification of mental and behavioral disorders contained in the 10th formulation of the World Health Organization (WHO) document for the classification of diseases (ICD-10), homosexuality is no longer considered an illness in itself and is recognized the existence of dystonic forms of all sexual orientations. Echo-dystonic homosexuality is a homosexuality recognized by the subject but not accepted. If a homosexual, fully conscious of being homosexual, comes into conflict with his sexual orientation for religious, moral or social reasons and wishes to change sexual orientation, his homosexuality is called ego-dystonic homosexuality. This category is now outdated and ego-dystonic homosexuality is no longer classified as a mental disorder, but as a simple discomfort due to cultural or social reasons.
The ICD-10 was approved by the 43th WHO Assembly in May 1990 and has been in use in the WHO member States since 1994. The release date for ICD-11 is 2018, and any reference to homosexuality, even the ego-dystonic one, is expected to be completely eliminated.
Two points must be underlined:
1) the excess of psychiatrization has arrived to overcome the limits of the ridiculous (and really of the pathological) with the description, in the XIX century, of a presumed disease, the drapetomania, a "disorder of slaves who have the tendency to escape from their owner due to an innate propensity for the desire to travel". Psychiatry, starting from the assumption that slavery was a normal thing, has come to consider pathological the tendency of slaves to flee!
2) maintaining the category of "ego-dystonic homosexuality" has fueled the thriving market of conversion therapies aimed at bringing back homosexuals to heterosexuality, because these aberrant practices were officially considered forms of treatment for a "disease" and therefore were repayable by health insurances or national health services, if any.
Homosexuality had been deleted from the DSM (Diagnostic and Statistical Manual of the American Psychiatric Association (APA)) since 1973, after a very tortuous path in which ideological resistance, political opportunism and economic interests were intertwined in various ways, in a border territory in which science (psychiatry) risked losing even the appearance of objectivity. In this regard, I refer to a fine article by Jack Drescher: Out of DSM: Depathologizing Homosexuality which illustrates the path that led to the de-pathologisation of homosexuality by the APA.
Let's leave aside, with all the reservations of the case, the category of ego-dystonic homosexuality, and let’s come to the specific object of this article, that is the dysfunctional gay sexuality which is something profoundly different.
Gays and dysfunctional sex