Hydrocele
Overview
A hydrocele occurs when fluid collects around one or both testicles inside the scrotum, causing swelling. Hydroceles are common in infants and young boys and are often painless.
Some hydroceles improve naturally during infancy, while others persist or increase in size and may require surgical assessment. The swelling may become more noticeable during the day or fluctuate in size depending on activity or position.
The focus is on monitoring scrotal swelling, identifying associated groin conditions such as hernias, supporting healthy development, and guiding treatment where needed.
Symptoms
Hydroceles mainly affect the appearance and size of the scrotum. Symptoms and concerns may include:
- Swelling in one or both sides of the scrotum
- Painless enlargement of the scrotum
- Swelling that changes size during the day
- Feeling of heaviness or fullness in older children
- Occasionally, associated groin swelling if linked to a hernia
Most children with hydroceles do not appear unwell and often remain active and comfortable.
Causes & Risk Factors
Hydroceles usually develop because fluid remains trapped around the testicle during development before birth. Risk factors may include:
- Premature birth
- Associated inguinal hernia
- Congenital developmental differences affecting the groin area
Some hydroceles disappear naturally as the fluid is gradually absorbed.
When to Seek Care
You should seek medical assessment if your child:
- Has swelling of the scrotum
- Develops increasing scrotal size
- Experiences discomfort or pain
- Has associated groin swelling
- Has swelling that persists beyond infancy
- Requires follow-up after newborn or child examination
Emergency Symptoms
Some groin or scrotal symptoms may require urgent medical care. Seek immediate medical care if your child experiences:
- Sudden severe scrotal pain
- Redness or tenderness of the scrotum
- Vomiting with groin or scrotal swelling
- Fever with worsening swelling
- Rapid increase in swelling size
- Reduced responsiveness or severe weakness
Prevention
Congenital urinary tract concerns cannot usually be prevented because they develop before birth. However, early diagnosis and follow-up may help reduce complications and protect long-term kidney function. Helpful measures may include:
- Routine prenatal and newborn assessment
- Early treatment of urinary infections
- Attending follow-up imaging and specialist appointments
- Supporting healthy hydration and bladder habits
Diagnostics Used
Assessment may involve urinary evaluation, kidney and bladder imaging, laboratory investigations, and monitoring of urinary function and development. Depending on your child’s needs, the care team may use:
Support Services
Children with congenital urinary tract concerns may benefit from additional developmental, emotional, or long-term follow-up support. Support services may include:
- Pharmacy support and medication guidance
- Nutrition and hydration guidance
- Counselling and family education
- Referral coordination and long-term specialist monitoring
This multidisciplinary approach helps support urinary health, kidney protection, growth, and long-term wellbeing.