Retrograde ejaculation can be caused by prior prostate or urethral surgery, Fractures of the pelvis that damage the nerves to the bladder, Spinal cord injury,
Diabetes, Surgical removal of the prostate, Surgical removal of the colon, Surgery of an aortic aneurysm,
Some prescription drugs, eg. tranquilisers, blood pressure medication, some medications, including some drugs used to treat hypertension and some mood altering drugs.
The condition is relatively uncommon and may occur either partially or completely. The presence of semen into the bladder is harmless. It mixes into the urine and leaves the body with normal urination. Men with diabetes and those who have had genitourinary tract surgery are at increased risk of developing the condition.