Scrotal swelling: common causes, tests & treatment explained.
A swelling in the scrotum is usually something simple and fixable — most often a hydrocele or a varicocele. Every new swelling deserves one proper check.
What causes scrotal swelling?
Several conditions can cause swelling in or around the testicle. The two most common are:
- Hydrocele — a collection of fluid around the testicle, causing a smooth, usually painless swelling
- Varicocele — an enlargement of the veins draining the testicle, similar to varicose veins in the leg, often felt as a "bag of worms"
- Epididymal cyst — a small, harmless fluid-filled lump behind the testicle
- Inguinal hernia — part of the intestine slipping down into the groin or scrotum
- Less commonly — a growth in the testicle itself, which is why no new swelling should be ignored
Hydrocele — fluid around the testicle.
A hydrocele forms when fluid collects in the thin sac around the testicle. The swelling is smooth, soft, usually painless, and slowly increases over months. It is common and harmless — but larger hydroceles become heavy, uncomfortable and embarrassing. Small, comfortable ones can simply be watched; larger or bothersome ones are corrected with a short, simple operation.
Varicocele — enlarged veins, and the fertility link.
A varicocele is an enlargement of the veins draining the testicle — essentially varicose veins of the scrotum, usually on the left side. It often causes a dull ache or heaviness that is worse after standing long. It matters most for two reasons: it can slow the growth of the testicle in young men, and it is a common, treatable cause of low sperm count. If you are planning a family, a simple evaluation and semen test can give clear answers.
Symptoms to watch for.
- Painless scrotal swelling that slowly increases (hydrocele)
- Dull ache or heaviness in the scrotum, worse after standing long (varicocele)
- Veins that feel like a "bag of worms"
- One testicle appearing smaller than the other
- Difficulty conceiving after a year of trying
Sudden severe testicular pain is different — it can be testicular torsion, an emergency. Seek care immediately.
How scrotal swelling is evaluated and treated.
Diagnosis is usually simple: an examination and a scrotal ultrasound identify the exact cause. When fertility is a question, a semen test gives clear answers.
- Hydrocele — small, comfortable ones can simply be watched; larger or bothersome ones are corrected with a short, simple operation
- Varicocele — no treatment needed if it causes no problems; when it causes pain, a smaller testicle, or an abnormal semen report, a minor procedure (ligation of the enlarged veins) usually improves the picture
- Other causes — cysts, hernias and rarer findings each have their own straightforward treatment once identified
Scrotal swelling care with Dr. Sreeniketh Reddy.
Consultant Urologist, Andrologist and Robotic Surgeon. He evaluates scrotal swellings of every cause — including surgical and non-surgical care for hydrocele and varicocele, with fertility-focused evaluation — at MEDICOVER Hospitals, Hitec City and LUX Hospitals, Gachibowli.
View full doctor profile →Frequently asked questions.
Is scrotal swelling dangerous?
Most scrotal swellings like hydrocele and varicocele are harmless, but every new swelling deserves an examination — occasionally a swelling needs urgent attention. Sudden severe testicular pain is an emergency.
Does a varicocele always affect fertility?
No. Many men with a varicocele father children without any treatment. It matters most when there is difficulty conceiving, an abnormal semen report, or one testicle is smaller. A simple semen test gives a clear answer.
Will a hydrocele go away on its own?
In adults, a hydrocele usually does not disappear on its own. Small, painless ones can simply be watched; larger or uncomfortable ones are corrected with a short, simple operation.
Get the swelling checked.
Request an appointment with Dr. Sreeniketh Reddy at MEDICOVER Hospitals, Hitec City or LUX Hospitals, Gachibowli.