Treatment for an enlarged testicle depends entirely on what’s causing the swelling, and the causes range from harmless fluid buildup to infections to conditions requiring emergency surgery. Most cases involve one of a handful of common conditions, each with its own treatment path. Identifying the underlying cause is the first and most important step.
What’s Causing the Swelling
Several conditions can make a testicle appear larger than normal. The most common include:
- Hydrocele: painless fluid buildup around the testicle, common in newborns but also affecting adults
- Epididymitis: infection or inflammation of the tube behind the testicle that carries sperm, often caused by a sexually transmitted infection or urinary tract bacteria
- Varicocele: swollen veins within the scrotum, similar to varicose veins in the legs
- Inguinal hernia: tissue from the abdomen pushing down into the scrotum through a weak spot in the abdominal wall
- Testicular torsion: the testicle twists on its blood supply, cutting off circulation
- Testicular cancer: a painless lump or swelling, typically in one testicle
A doctor will usually start with a physical exam and an ultrasound to distinguish between these possibilities. The character of the swelling matters: painless and gradual suggests a hydrocele or varicocele, painful and sudden points toward torsion or infection, and a firm painless lump raises concern for cancer.
Treating Infections
Epididymitis, the most common infectious cause, is treated with antibiotics. The specific medication depends on the likely source of the infection. When a sexually transmitted infection like chlamydia or gonorrhea is suspected, treatment typically involves a combination of two antibiotics taken over 10 days, one given by injection and one taken orally. For infections caused by urinary tract bacteria, which are more common in older men, a single oral antibiotic course over 10 days is standard.
While the antibiotics work, you can manage discomfort at home. Ice packs applied to the scrotum (a bag of frozen peas works well) help reduce swelling. Wearing snug, supportive underwear or a jockstrap keeps the swollen testicle from moving around, which reduces pain significantly. Lying down with your feet elevated also helps. Most men notice improvement within a few days of starting antibiotics, though the swelling can take a couple of weeks to fully resolve.
Hydrocele Treatment Options
Hydroceles in infants often resolve on their own within the first year. In adults, a small hydrocele that isn’t bothering you may not need treatment at all.
When treatment is needed, two options exist: draining the fluid with a needle (aspiration, sometimes combined with injecting a chemical to prevent refilling) or surgical removal of the fluid sac. Surgery, called a hydrocelectomy, is the more reliable choice. In a study comparing the two approaches, about 35% of men who had aspiration with chemical injection saw the hydrocele return within three months, and all of them had recurrence after a second aspiration attempt. By contrast, 95% of men who had surgical removal were satisfied with the outcome, compared to about 62% in the aspiration group. Aspiration is cheaper and has fewer complications, but the high recurrence rate makes surgery the preferred option for most adults.
When Varicoceles Need Treatment
Varicoceles are extremely common, affecting up to 15% of men, and most don’t need treatment. You’ll typically only need intervention if the varicocele is causing pain, the affected testicle is shrinking, or you’re having fertility problems. Varicoceles are one of the most treatable causes of male infertility because repairing them often improves sperm quality.
Two main approaches exist. Surgical ligation involves tying off the swollen veins through a small incision, redirecting blood flow to healthy veins. Embolization is a less invasive option where a specialist threads a thin tube through a vein in the groin and blocks the affected veins from the inside, requiring no surgical incision. Both procedures are effective, and your doctor will recommend one based on the specifics of your case.
Inguinal Hernia Repair
When abdominal tissue pushes into the scrotum through a weak point in the groin, the only definitive fix is surgery. Two approaches are available. In open repair, a surgeon makes an incision in the groin, pushes the protruding tissue back into the abdomen, and reinforces the weak area with synthetic mesh before closing. In minimally invasive repair, the surgeon works through several small incisions in the belly using a camera and tiny instruments, placing mesh to strengthen the area from the inside.
The minimally invasive approach generally means less pain and a faster return to normal activity, though both methods are well established.
Testicular Torsion Is an Emergency
Torsion is the one cause of testicular swelling where hours matter. When the testicle twists, its blood supply gets cut off. After six hours of pain, the chances of losing the testicle increase dramatically. If treatment is delayed beyond 12 hours, there is at least a 75% chance the testicle will need to be removed. The treatment is surgery to untwist the testicle and stitch it in place so it can’t twist again. The other testicle is usually secured at the same time to prevent future torsion on that side.
The hallmark symptoms are sudden, severe pain in one testicle, often with nausea or vomiting. If you experience this, get to an emergency room immediately.
If Cancer Is Suspected
Testicular cancer typically presents as a painless lump or firmness in one testicle, sometimes with a feeling of heaviness. It’s one of the most treatable cancers, especially when caught early. The standard treatment is surgical removal of the affected testicle along with the spermatic cord (the bundle of vessels and tubes connecting the testicle to the body). Surgeons tie off these structures early in the operation to prevent cancer cells from spreading through them.
In rare cases where cancer develops in both testicles (about 2% of cases), both may need to be removed. For some patients with small tumors, a tissue-sparing approach can remove the cancer while preserving healthy testicular tissue, helping maintain hormone production and fertility. This requires close follow-up monitoring.
Recovery After Scrotal Surgery
Recovery timelines vary by procedure, but most scrotal surgeries share similar restrictions. For the first few days, wear loose clothing and rest. For roughly two weeks after surgery, avoid heavy lifting, running, and sexual activity. The full recovery process typically takes several weeks. Your surgeon will give you specific guidance on when you can return to sports and physical work.
During recovery, supportive underwear or a jockstrap helps minimize discomfort. Ice packs in the first few days control swelling, and keeping your feet elevated when lying down promotes healing. Most men manage post-surgical pain well with over-the-counter medication, though your doctor may prescribe something stronger for the first few days.