Noticing swelling in your baby’s scrotum can be alarming. One of the most common causes is a hydrocele, a pocket of fluid around the testicle. The good news? Most hydroceles are harmless and painless. Still, understanding what’s normal—and when to seek medical advice—can give you peace of mind.
What Is a Hydrocele?
A hydrocele occurs when fluid collects around the testicle, causing the scrotum to look enlarged. It often feels soft and smooth, almost like a small water balloon. Babies usually aren’t bothered by it, and it doesn’t affect feeding, sleeping, or play.
Why Do Hydroceles Happen?
During pregnancy, a baby’s testicles descend from the abdomen into the scrotum through a small tunnel. Sometimes, fluid travels along with the testicle and becomes trapped. Most of the time, this fluid is naturally absorbed by the body within the first year of life.
When Is It Normal?
Non-communicating hydroceles—the most common type—usually:
- Stay soft and painless
- Remain about the same size or gradually shrink
- Don’t affect your baby’s daily activities
In these cases, no treatment is usually needed, just regular monitoring.
When to Be Concerned
You should check with a pediatric urologist if you notice:
- Swelling that changes size during the day
- Swelling that persists beyond the first year
- Firm or tense swelling
- Redness, pain, or irritability
- Swelling accompanied by vomiting
These could be signs of a communicating hydrocele or, in some cases, an inguinal hernia, which requires prompt evaluation.
Treatment Options
Most hydroceles resolve on their own. Surgery may be recommended if a hydrocele:
- Is communicating
- Persists beyond age 1–2
The procedure is typically outpatient, safe, and highly effective, helping your child stay comfortable and healthy.
The Bottom Line for Parents
A swollen scrotum can be worrying, but hydroceles are common and usually harmless. Keep an eye on changes, trust your instincts, and seek professional guidance if something feels off.
If your baby has a hydrocele—or if you notice a bulge or swelling in your infant’s scrotum—contact Dr. Joe Gleason, our Pediatric Urologist, for an evaluation. Early diagnosis and care lead to the best outcomes for your child’s health and comfort.
