Can a Hydrocele Cause Pain in Adults?
Yes, hydroceles can cause pain in adults, though they are more commonly painless—pain typically indicates complications, rapid accumulation, or associated pathology rather than the hydrocele itself.
Clinical Presentation of Hydroceles in Adults
Typical Presentation
- Most hydroceles are painless and present as gradual, non-tender scrotal swelling that transilluminates 1
- The classic presentation is a painless mass that develops slowly over time 2
When Hydroceles Cause Pain
Reactive hydroceles developing secondary to inflammation are more likely to be symptomatic:
- When a hydrocele develops as a reactive process (such as with epididymitis or epididymoorchitis), it can be associated with scrotal pain as the underlying inflammatory condition progresses 3
- The pain in these cases stems from the primary inflammatory process rather than the hydrocele fluid itself 3
Specific painful presentations include:
- Hydroceles of the Canal of Nuck in females can present with pain and discomfort in the inguinal region 4, 5
- Rapid accumulation of fluid may cause discomfort and psychosocial distress 1
- Large or giant hydroceles can cause discomfort due to size and pressure effects 6
Differential Diagnosis Considerations
Critical: Rule Out Surgical Emergencies
When evaluating scrotal pain in adults with a hydrocele, always exclude testicular torsion and acute epididymoorchitis, which are the most common causes of acute scrotal pain in adults 3:
- Epididymoorchitis is the most common cause of acute scrotum in adolescent boys and adults, and reactive hydroceles frequently develop as inflammation progresses 3
- Pain from epididymitis typically has a more insidious and gradual onset compared to torsion 3
- The Prehn sign (pain relief with testicular elevation) may help differentiate epididymitis from torsion 3
Other Diagnostic Considerations
Hydrocele is listed among the differential diagnoses for acute scrotal pain, but accounts for a minority of cases compared to epididymitis, testicular torsion, and torsion of testicular appendage (which together comprise 85-90% of acute scrotal pain cases) 3
Clinical Pitfalls
Common diagnostic errors:
- Assuming all scrotal swelling with hydrocele is benign—always investigate new or acute pain to exclude underlying pathology 3, 1
- Failing to recognize that reactive hydroceles indicate underlying disease (infection, inflammation, tumor) that requires treatment 3
- In females, hydroceles of the Canal of Nuck are frequently misdiagnosed as inguinal hernias or cysts, delaying appropriate management 4, 5
Management Implications
When pain is present with hydrocele:
- Investigate and treat the underlying cause (infection, inflammation, trauma) rather than focusing solely on the hydrocele 3, 1
- Ultrasound evaluation is essential to characterize the hydrocele and identify associated pathology 3
- Surgical intervention may be warranted for symptomatic hydroceles causing persistent discomfort, though standard procedures can themselves cause postoperative pain and complications 7
Caution with sclerotherapy: Tetracycline sclerotherapy for hydroceles has been associated with severe scrotal pain in 46.6% of patients, with some requiring surgical intervention—this approach is not recommended 8