Aspermia is the complete lack of semen fluid with ejaculation. Aspermia is associated with male infertility; man may reach orgasm but no semen moves out the urethra. Aspermia is different from azoospermia condition. In azoospermia there is semen fluid but no sperm cells inside but in aspermia; both semen and sperm cells are absent.
Aspermia has 2 main causes. Also various conditions may cause aspermia and lack of semen. Retrograde ejaculation and ejaculatory duct obstruction are the 2 main causes of aspermia.
In normal conditions semen fluid should be ejaculated out through urethra. Retrograde ejaculation is caused by a problem in bladder sphincter which contracts before ejaculation and prevent semen fluid to fill in the bladder. If the bladder sphincter can’t work properly, semen travels into the bladder instead of ejaculating out. Retrograde ejaculation may be caused by some factors;
- Prostate surgery
- Testicular surgery
- Colon surgery
- Rectum surgery
- Bladder surgery
- Spine surgery
- Medicines like hypertension drugs, antidepressants
- Nerve damage because of a disease like Parkinson’s disease, multiple sclerosis
- Autonomic nervous system dysfunction