Back pain associated with orgasms, whether ejaculation occurs or not, is a condition called female dysorgasmia. However, not much is known about this alteration to date.
It usually happens when a woman climaxes, and appears in the form of a cramp-like pain in the lower part of the abdomen which can be referred to the back or rectum area. Most patients describe it as an intense, bothersome pain that passes within a few minutes.
Some studies have found that, given the fact that it occurs most often in women aged 35 to 55, it may be linked to menopause. Other theories associate it with the presence of ovarian cysts, endometriosis or fibroids.