With testicle pain there is one number that genuinely matters, and it is not how badly it hurts on a scale of ten. It is how many hours have passed. In a twist of the spermatic cord, roughly 97 percent of testicles can still be saved within six hours. After 24 hours, that is around 42 percent.
That is the whole reason this piece exists, and it is exactly what most pages on this topic tuck away near the bottom.
So let us turn it around. Urgency first, the rest after.
What causes pain in your testicle?
Usually one of four things: a twist of the spermatic cord, an inflammation of your epididymis, varicose veins above your testicle, or a blow you can still remember taking. They feel different, they come on at different speeds, and each carries a different level of urgency.
That speed of onset is the most useful distinction you can make at home.
A twist hits like a switch, often within minutes, sometimes in the middle of the night. An inflammation creeps in over a few days. A varicocele mostly nags after a long day on your feet and eases off when you lie down.
Severity, by contrast, tells you surprisingly little. Epididymitis can hurt enormously without being urgent, and a blow can be crippling and still be harmless.
When is testicle pain an emergency?
When the pain comes on suddenly and severely, especially with nausea or vomiting, and especially if your testicle seems to sit higher or at an odd angle. That can be a testicular torsion, where the spermatic cord twists and cuts off the blood supply. According to Thuisarts, the Dutch GP information service, that means calling your GP or the out-of-hours service immediately.
Not tomorrow morning. Now.
A review of 1,283 cases shows why that urgency is so hard (PMID 28953100). The researchers set the survival of the testicle against the number of hours of symptoms.
| Hours of symptoms | Share of testicles saved |
|---|---|
| 0 to 6 hours | 97.2 percent |
| 7 to 12 hours | 79.3 percent |
| 13 to 18 hours | 61.3 percent |
| 19 to 24 hours | 42.5 percent |
| 25 to 48 hours | 24.4 percent |
| More than 48 hours | 7.4 percent |
Read that table top to bottom once more. Every row is a few hours of waiting.
The authors are honest about the nuance: testicles are sometimes still saved outside that window. But the direction of those numbers is unmistakable, and nobody wins anything by waiting it out.
Torsion is most common in teenagers and young men, though it can happen at any age. Starting at night is a classic part of the story.
What does epididymitis pain feel like?
Different. Epididymitis usually builds over a few days rather than a few minutes. The pain often sits at the back and top of your testicle, the area feels warm and swollen, and urinary symptoms or fever may come with it.
That slow start is the key difference from a twist.
According to Thuisarts, epididymitis often comes from a bladder infection, a prostate infection or an STI such as chlamydia or gonorrhoea.
In men between roughly 14 and 35, chlamydia and gonorrhoea are the most common pathogens, while in older men enteric bacteria are more often responsible (PMID 19378875). In practice, that age split shapes which treatment makes sense.
If you feel unwell and the pain has been there for days, this belongs with your GP. There is more detail in epididymitis.
Can a varicocele hurt?
Yes, though it is usually not a sharp pain. A varicocele is a bundle of widened veins above your testicle, and it tends to give a heavy, nagging feeling that gets worse through the day. Typically it flares after long periods standing or exercising, and settles once you lie down.
That pattern, worse standing and better lying down, is fairly characteristic.
Many men with a varicocele have no pain at all and notice nothing. It is often only found when someone gets checked for another reason.
Because a varicocele may also affect your sperm quality, it is more than a comfort issue. We work that through in varicocele and your fertility.
How long can testicle pain last?
Sudden severe pain should not last an hour without you calling someone. Nagging pain that persists for days belongs with your GP within those days, even if it is bearable. And pain that goes away but keeps coming back deserves a proper physical examination just as much.
What keeps striking me about men is that this is where we bring out the worst in ourselves.
We wait. We google. We decide it is probably a pulled muscle, and we tell nobody. I understand why, and it is precisely the wrong strategy for the one organ where time is literally tissue.
Below is the overview I would want to see myself if I woke up at half past two in the morning.
| How it started | What often comes with it | What it may point to | How urgent |
|---|---|---|---|
| Suddenly, within minutes, severe | Nausea, vomiting, testicle sits higher or at an angle | Testicular torsion | Call immediately, emergency |
| Gradually, over days | Warmth, swelling, urinary symptoms, sometimes fever | Epididymitis | See your GP quickly |
| Nagging, worse when standing | Heavy feeling, eases when lying down | Varicocele | Book an appointment with your GP |
| After a blow or knock | Bruising, immediate severe pain that eases | Contusion | GP if it does not settle or keeps swelling |
| No pain, but a lump | Hard, painless, slowly growing | Always get it checked | Book an appointment with your GP |
That last row is the one men ignore most often, precisely because nothing hurts. What may be going on, and why a blood test does not answer it, is covered in testicular cancer symptoms.
What does the GP do about testicle pain?
Feel, look and ask. Your GP assesses the position and tenderness of your testicle, asks how it developed and about urinary symptoms, and may use urine tests or an ultrasound. If a twist is suspected, it goes straight on to hospital, because the diagnosis is made there in surgery and treated immediately if needed.
Blood tests usually play no leading role here.
That is a fair thing to say on a site that sells blood tests. With acute testicle pain, the physical assessment is what counts, and a vial of blood does not help you with it. Go to your GP.
Where blood values do add something is once the dust has settled and the question shifts to your hormones or your fertility. How your testicles divide those two jobs is set out in testicles: how they work, and the bigger picture is in our guide to male fertility.
If you want hormones such as LH, FSH and testosterone looked at later, that can happen calmly at a moment when you are not in pain.
But today, in pain: call your GP. Not your laptop.
References
- Mellick LB, et al. A Systematic Review of Testicle Survival Time After a Torsion Event. Pediatric Emergency Care. 2019. PMID 28953100.
- Trojian TH, et al. Epididymitis and orchitis: an overview. American Family Physician. 2009. PMID 19378875.
- Thuisarts. Pijn in je balzak: wat kan het zijn, wat moet je doen? thuisarts.nl
- Thuisarts. Ik heb een bijbal-ontsteking. thuisarts.nl
Every blood test result at Caliber includes a professional assessment by a BIG-registered doctor. For treatment decisions, always discuss your results with your GP.
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