A varicocele often produces no signs or symptoms. Rarely, it may cause pain. The pain may:
- Vary from sharp to dull discomfort
- Increase with standing or physical exertion, especially over long periods
- Worsen over the course of a day
- Be relieved when you lie on your back
With time, varicoceles may enlarge and become more noticeable. In young men, the presence of a varicocele impairs sperm production and can often be improved with treatment.
When to see a doctor
Because a varicocele usually causes no symptoms, it often requires no treatment. Varicoceles may be discovered during a fertility evaluation or a routine physical exam.
However, if you experience pain or swelling in your scrotum, discover a mass on your scrotum, notice that your testicles are different sizes, or develop a varicocele in your youth, or you're having problems with fertility, contact your doctor. A number of conditions can cause a scrotal mass or testicular pain, some of which require immediate treatment.
Source: http://www.mayoclinic.com