A testicular self examination helps you become familiar with how your testicles normally look and feel. You are not trying to diagnose cancer at home. The useful part is recognising a new lump, swelling or change and knowing when to ask a healthcare professional to assess it.
Most testicular changes are not cancer, but they should not be dismissed. A few quiet moments during or after a warm shower can make it easier to notice what is normal for you, without turning every small difference into a reason to worry.
What a testicle self check can and cannot tell you
The NHS advises checking around once a month, starting from puberty, so you can recognise changes. Cancer Research UK takes a less prescriptive approach: there is no strong evidence that following a rigid self-examination schedule improves survival. Both approaches emphasise knowing your body and seeking medical advice when something changes.
A home testicular examination cannot tell whether a lump is harmless or cancerous. It is also not the same as cancer screening. There is no national testicular cancer screening programme in the UK. The aim is awareness, not a reassuring result that overrides symptoms.
How to check your testicles gently
Choose a comfortable moment
During or just after a warm bath or shower, the skin of the scrotum is usually more relaxed. Stand somewhere private with good light. Avoid checking so frequently that normal variations begin to feel alarming.
Check one testicle at a time
Support your scrotum in one palm. With the fingers and thumb of your other hand, gently roll one testicle and feel its surface. Repeat on the other side. The testicle itself normally feels smooth and firm, rather than rock-hard. Do not squeeze or press forcefully; a light touch is enough.
Notice its approximate size, shape and weight, and whether there is a new firm area or swelling. A testicle lump check is about identifying a change, not finding two perfectly identical testicles. One may naturally be slightly larger or hang lower than the other.
Recognise the structures at the back
Behind each testicle is the epididymis, a soft, coiled tube involved in carrying sperm. It may feel like a small ridge or cord. People sometimes mistake this normal structure for a lump when checking for the first time. However, a new lump, tenderness or swelling in this area should still be assessed by a GP.
Look at the scrotum as well as feeling the testicles. A noticeable change in fullness, heaviness or shape is worth discussing, even if you cannot identify a distinct lump.
What should feel normal?
There is no single ideal size or position. Testicles often differ slightly from one another, and the scrotum may hang differently depending on temperature. The important comparison is with your own usual appearance and sensation, not a photograph or someone else’s anatomy.
For example, perhaps your left testicle has always sat lower. That alone is not a warning sign. If you notice it has recently become distinctly larger, harder or unusually heavy, that is a change to report. If you are unsure whether a feature was present before, a GP can examine it rather than leaving you to guess.
Changes that deserve a GP appointment
Arrange an appointment if you notice a new lump on or near a testicle, swelling, a change in size or shape, unusual firmness, heaviness in the scrotum, or an ache that persists. A lump does not have to hurt to deserve attention.
These symptoms can have several causes, including cysts, fluid collections, infections and other conditions. Many are not serious, but feeling them yourself cannot establish the cause. If you have symptoms, do not wait until your next planned check or keep repeating the examination to see whether you can make the finding disappear.
For more background on warning signs, see our guide to testicular cancer symptoms. Information about common causes of testicular pain can also help you understand why similar symptoms need different treatments.
When testicular pain is an emergency
Sudden, severe pain in a testicle is different from finding a painless lump. Go to A&E immediately or call 999 if pain is sudden and severe, occurs with nausea, vomiting or abdominal pain, or lasts more than an hour or continues while resting. One possible cause is testicular torsion, which can interrupt blood supply and requires urgent treatment.
Do not spend time performing a longer self-check, wait for a GP appointment, or drive yourself to hospital if you have these symptoms. Getting emergency assessment matters more than identifying the cause at home.
What happens after you tell your GP?
Your GP will ask when you noticed the change, whether it hurts and whether you have other symptoms. They may examine your scrotum and testicles and, depending on their findings, arrange an ultrasound scan or refer you to a specialist. Ultrasound can help distinguish different kinds of lumps.
Feeling embarrassed is understandable, yet GPs routinely assess intimate health problems. You can ask for a chaperone during the examination. A brief description such as “I found a small, new lump on my right testicle on Monday” is enough to start the conversation.
If you want to know more about the process, our explanation of what happens during a testicular ultrasound is a useful next read.
Keep awareness practical, not obsessive
Some people find a monthly reminder convenient; others simply pay attention to changes while bathing. Either way, avoid repeatedly pressing a tender spot or comparing tiny differences day after day. That can cause discomfort without providing a diagnosis.
Men’s cancer awareness is most useful when it encourages timely action rather than fear. If something looks or feels different, note what you noticed and contact your GP. You do not need to decide whether it is cancer before asking for help.
Frequently asked questions
How often should I examine my testicles?
The NHS suggests around once a month. Cancer Research UK says no fixed method or schedule has been proven to improve outcomes. Choose a sensible approach that helps you notice changes without excessive checking, and follow personalised advice if your clinician gives it.
Is it normal for one testicle to be bigger?
Yes. A small, longstanding difference in size or hanging position is common. A new or increasing difference, however, should be examined by a GP.
Does a painless lump mean testicular cancer?
Not necessarily. Most testicular lumps are not cancer, but a painless lump can still be a symptom. Arrange a GP assessment rather than trying to identify it from touch alone.
Can a self-check replace a medical examination?
No. Self-awareness helps you recognise changes, while a clinician can examine you and arrange appropriate tests. Even if you cannot feel a lump, persistent pain, swelling or another unusual change deserves medical advice.
A simple habit with a clear purpose
Knowing what is normal for your testicles can make unfamiliar changes easier to spot. Be gentle, focus on new differences, and do not use a home check as proof that everything is fine. If something concerns you, contacting your GP is the most useful next step; sudden severe pain needs emergency care.