How have changes in the DSM impacted clinical diagnosis for homosexuality and PTSD? How has the field of mental health changed as a result of the current concepts of homosexuality and PTSD?

Homosexuality and PTSD.

How have changes in the DSM impacted clinical diagnosis for homosexuality and PTSD?
How has the field of mental health changed as a result of the current concepts of homosexuality and PTSD?
What is the impact on clinical practice because of these changes?
How does the concept of research trends in the DSM apply to any of the following programmatic themes?