How Common Is Orchitis

Epidemiology. Epididymitis is more common than orchitis. 3,4 In one outpatient study, orchitis occurred in 58 percent of men diagnosed with epididymitis. 3 Isolated orchitis is rare and is generally associated with mumps infection in prepubertal boys (13 years or younger).

What is the most common cause of orchitis?

Orchitis is most often the result of a bacterial infection, such as a sexually transmitted infection (STI). In some cases, the mumps virus can cause orchitis.

Does orchitis come go?

Orchitis is swelling of the testis alone is uncommon. It almost always comes on quickly and goes away with treatment. Chronic orchitis isn’t well-defined.