Testicular swelling
Informed by recognized medical guidance
Overview
Testicular swelling is when one or both testicles become larger, fuller, or feel different than usual. It can happen with or without pain and may be caused by many different conditions, from harmless fluid buildup to more serious problems that need prompt treatment.
Key facts
- Testicular swelling is common and often not serious, but it is important to see a doctor to find out the cause.
- Common causes include injury, infection (like epididymitis), hydrocele (fluid around the testicle), varicocele (enlarged veins), hernia, or testicular cancer.
- Sudden severe pain with swelling can be a sign of testicular torsion, which is a medical emergency and requires immediate treatment.
Testicular swelling is relatively common, especially in young and middle-aged men. Many men will experience some form of scrotal swelling at some point in their lives.
It affects males of all ages, from newborns to older adults. Different causes are more common at different ages. For example, hydrocele is common in infants, while testicular torsion is more common in teenagers and young adults. Epididymitis occurs more often in sexually active men.