Homosexuality in DSM

Classification of gay, lesbian, and bisexual sexual orientations underwent major changes in different editions of "Diagnostic and Statistical Manual of Mental Disorders" (DSM) published by the American Psychiatric Association (APA). DSM I classified these orientations under "paraphilia", and DSM II under "sexual orientation disturbance". DSM III further modified this to "ego-dystonic homosexuality", before finally dropping the subject from DSM-III-R (and subsequent editions).
DSM-II.
The DSM-II considered homosexuality as one form of paraphilia, but in the seventh printing of DSM-II homosexuality had shifted to another classification, which is sexual orientation disturbance. This major change had been preceded by increasing activities of the LGBT community in the 1960s, specifically the Stonewall riots in 1969. These activities continued in 1970 with the following predominant events:
DSM-III.
In DSM-III, homosexuality had been shifted to a new "Ego-dystonic homosexuality" classification.
DSM-III-R.
In DSM-III-R, the new "Ego-dystonic homosexuality" classification was also removed and was largely subsumed under "sexual disorder not otherwise specified", which can include "persistent and marked distress about one's sexual orientation.