What causes the scrotum to swell?

Scrotal swelling may be painless or very painful. Although it can be alarming, most causes are benign and highly treatable.

Several conditions may cause the scrotum to swell.

More common causes of scrotal swellings include infections (epididymo-orchitis), hydrocele (a collection of fluid around the testicle), epididymal cysts (fluid filled sac arising from the epididymis) or a varicocele (a collection of dilated veins surrounding the spermatic cord).

In very rare cases, scrotal swelling may indicate cancer. It is therefore essential to have any swelling checked out by a doctor.