I too am having pain with arousal. My libido drastically dropped at about 6 months of HRT. Sex, masturbation, everything stopped by the time a year rolled around.
Three months later I decided to relieve some stress only to discover that it caused excruciation pain. The pain I'm feeling isn't stretching skin pain. This pain is internal, most likely due to shrinkage of tunica albuginea. Even worse, the pain lasts for days, long after the erection is gone.
I'm reluctant to revisit this level of pain, but have several times hoping the pain will lessen. No such luck.
I'm so ready to be rid of this nuisance!