What should your testicles feel like?

When you feel your testicles through the scrotum (the sac of skin below and slightly behind your penis, which contains the testicles), they should feel smooth, without any lumps or bumps. Your testicles should feel firm but not hard if you give them a gentle squeeze.

Your epididymis sits behind the testicle, within the scrotum. Your epididymis is a twisting tube that holds the sperm while they mature and moves the sperm further on down the line.

What shape and size should your testicles be?

Adults’ testicles are about the same shape and size of a chicken’s egg. It’s common for one to be a bit bigger than the other and for one to hang slightly lower.

What can cause testicles to look and feel different to how they should?

There are certain health conditions that can change the way your testicles look and feel.

Your testicles look or feel lumpy and/or bumpy

Your testicles may have lumps and bumps on them sometimes. Even if a lump or bump is painless, you should see your doctor about it as soon as possible. Although most testicular lumps are nothing to worry about, they can be a sign of testicular cancer, and although it’s rare, testicular cancer is the second most common cancer in males aged 18 to 39 according to the Cancer Council. The good news is that if it’s caught early, testicular cancer has a high cure rate of over 95%.

Your testicles look or feel swollen

Your testicles may become swollen or enlarged due to a bacterial infection like epididymitis or chlamydia, testicular cancer or testicular torsion.

Your scrotum looks or feels full of fluid

If your scrotum looks or feels like it’s full of fluid on one or both sides, you may have a hydrocele. A hydrocele may be caused by inflammation or injury but it’s not usually painful. If your scrotum looks or feels like it is full of fluid, you should visit your doctor who may take an ultrasound to investigate what is causing this.

Your scrotum looks or feels veiny

If your scrotum looks veiny (usually on the left-hand side), it may be caused by a condition called varicocele. This is an enlargement of the veins that sit within the scrotum and feels kind of wormy. The cause of varicoceles is not fully understood. While varicoceles don’t often require any treatment, they can reduce fertility, so it’s worth talking about it with your doctor if you have a varicocele and are having trouble conceiving a baby. If you notice other signs and symptoms alongside your testicles looking veiny, such as your testicles becoming swollen or painful, or noticing a lump on your testicles, you should visit your doctor.

Your epididymis (the thin tube connected to your testicles) looks swollen

If your epididymis becomes swollen and tender, you may have a condition called epididymitis. You should see your doctor as soon as possible if your epididymis feels swollen or sore as you may need to get checked for sexually transmitted infections (one of the most common causes of epididymitis is chlamydia).

Cysts (collections of fluid that feel like small water-filled balloons) are common in or on the epididymis. Some will be too small to notice but they can get as big as the testicle. Epididymal cysts are not usually painful and don’t often have any complications. If you notice one and it’s not causing you any trouble, just keep an eye on it. They usually go away on their own. It might be worth mentioning to your doctor for peace of mind. If the cyst gets bigger, or painful, make sure you see your doctor.


Watch our short video to learn how to carry out a self-testicular examination.

If you’ve carried out a self-examination and have noticed any of the above changes to your testicles, visit your GP, who will be able to provide you with more information and next steps.


For more information on scrotal lumps, visit our information page.