(Pain in the Testicles) (cont.)
This condition occurs when there is inflammation of the epididymis, generally as a result of an infection. Epididymitis primarily affects adults, and is most common between 19 to 40 years of age, though it can occur in the prepubertal and elderly age groups.
In sexually active men, the most common cause of infection is the sexually transmitted organisms Chlamydia trachomatis and Neisseria gonorrhoeae. In younger and older individuals, infection is usually caused by bacteria that are found in the urinary tract, such as Escherichia coli. Infection in these age groups is typically the result of an abnormality within the genitourinary system.