Epididymal Hypertension (Blue Balls): What Causes It?
What blue balls feels like, why it happens, what may help, and how to distinguish a harmless ache from testicular pain that warrants urgent medical assessment or an ultrasound scan.
In 2023, a team led by Levang published the largest survey ever run on this condition, in Sexual Medicine.
Of the 1,483 participants with a penis, 56.0% said they had felt pain when approaching orgasm without ejaculating.
This, as per the study, was more than half. They finally had some real data on how many were experiencing it.
That settles the first question and leaves the one that actually matters: how do you tell a harmless ache from the kind that warrants a scan?
Here’s all you need to know about the condition, what it is, alarming signs and when one warrants an ultrasound scan.
Is blue balls actually real?
Yes, and it has a proper name: epididymal hypertension.
It means a dull ache, a dragging heaviness or a feeling of fullness in the testicles, following a long stretch of arousal that never resolved.
But ironically, nothing turns blue. The condition tagged along the name blue balls due to old slang that never really went away.
Why does blue balls or epididymal hypertension occur?
The reason behind blue balls, as per the researchers, is vasocongestion.
Here’s the breakdown: Arousal runs on the parasympathetic nervous system, which opens up the blood vessels feeding the penis and testicles.
Orgasm hands over to the sympathetic system, which closes them again and lets the extra blood drain away.
When you take the orgasm out – the handover never happens. And when blood sits where it is, you might feel that as heaviness.
It’s essentially arousal that carries on and goes nowhere. A session that stops short, long foreplay, arousal with no sexual activity at all.
And it’s not just men. Women report an equivalent pelvic ache, with the same proposed mechanism behind it.
In the same survey, 42.1% of participants with a vagina had experienced it, and 83.9% of them called it mild.
What does blue balls feel like?
Blue balls usually causes:
Most reported episodes are mild or moderate. Sharp, intense or rapidly worsening pain is not typical of epididymal hypertension and should not be dismissed as “blue balls”.
There is no reliable trial evidence establishing exactly how long it lasts. Mild discomfort often improves within minutes to a few hours, but NHS guidance advises urgent assessment for testicle pain lasting more than an hour or continuing at rest.
How to stop blue balls
Turns out- there is no specific medicine that cures epididymal hypertension because it usually resolves on its own. You can try:
- Waiting for arousal to settle.
- Orgasm, including through masturbation, if you want to and it is comfortable. It is never something another person is required to provide.
- Distraction or gentle activity.
- A warm or cool compress, whichever feels more comfortable. Do not apply ice directly to the skin.
- Paracetamol or ibuprofen at the usual over-the-counter dose, if you can take them safely. Follow the packet instructions and ask a pharmacist if you are unsure.
However, recurring pain, pain unrelated to arousal or any new lump deserves assessment because another condition may be responsible.
When is blue balls an emergency?
Blue balls builds slowly and fades slowly. But here’s how to differentiate a one-off situation from one that needs medical attention:
Go to A&E or call 999 now if you have:
- Sudden, severe pain in one testicle, especially alongside nausea, vomiting or stomach pain. Treat this as torsion until a hospital says otherwise.
- Pain that has now lasted more than an hour.
- Pain that is still there while you are sitting or lying still.
Get a same-day GP or sexual health appointment if you have:
- Pain with a fever, burning when you pass urine, or discharge. That points to epididymitis or another infection, which needs antibiotics rather than imaging.
Book a scan, or see your GP this week, if you have:
- A lump, a swelling, or one testicle that has changed shape or size.
- An ache that keeps coming back, or one that has been hanging around for weeks.
Do nothing at all if:
- The ache followed prolonged arousal, it is mild, and it is already easing off.
What else can cause a dull testicle ache?
If the discomfort keeps returning or happens without sexual arousal, epididymal hypertension may not be the right explanation.
Some other causes might include:
- Varicocele– enlarged veins that can cause a dragging ache, often worse after standing or later in the day.
- Epididymal cyst or spermatocele– a usually benign, fluid-filled lump near the epididymis.
- Hydrocele– fluid around the testicle that causes swelling.
- Epididymitis or orchitis– inflammation or infection, often with swelling, fever or urinary symptoms.
- Inguinal hernia– a groin bulge or dragging discomfort that may worsen with coughing or straining.
- Testicular cancer– often presents as a painless lump, swelling or change in the testicle rather than blue-balls-type pain.
A clinician may recommend an examination, urine or STI tests, blood tests or an ultrasound depending on your symptoms.
When can a testicular ultrasound help?
A testicular ultrasound with colour Doppler can assess the testicles, epididymides, spermatic cords and surrounding scrotal tissues.
It may help identify cysts, hydroceles, varicoceles, inflammation or a solid mass, and it can assess blood flow when torsion is being considered.
But a normal scan can still be useful: it may help rule out structural causes of persistent or recurring symptoms.
When to book a testicular ultrasound
Most men reading this do not. Epididymal hypertension is common, mild and short-lived, and patience covers it.
Book if the description has stopped fitting you: a lump you can feel, a heaviness that has not shifted in weeks, a testicle that has changed shape, or an ache with nothing obvious behind it- then it might be time for a testicular ultrasound that can help you understand the situation better.
Book a testicular ultrasound at London Private Ultrasound
Here are a couple of reasons why our patients choose us:
- Same-day appointments: We know that when you’re worried, you don’t want to wait. We offer same-day and next-day slots seven days a week, 9 am to 7 pm.
- No GP referral needed: Book directly without waiting for your GP to arrange anything. Call, WhatsApp, or book online.
- Expert sonographers: Every scan is done by a registered ultrasound consultant or sonographer with years of experience.
- Results on the day: You’ll get verbal results before you leave, plus a written report within 24 hours.
- A welcoming team: Scans can feel daunting, especially if you’re worried. Our team takes time to explain what’s happening, answer your questions, and make sure you feel comfortable throughout.
If your report mentions that you need a GP referral or further investigation, we’ll provide that referral letter for you. We can also book a follow-up consultation with one of our doctors if needed (at an additional cost), so you’re not left figuring out next steps on your own.
If you want the findings interpreted alongside your bloods, the Testes Health Package might be a better fit as it adds a male hormone panel and a GP appointment.
Frequently Asked Questions
Is blue balls a real thing?
Yes. In a 2023 survey of 2,621 people published in Sexual Medicine, 56.0% of participants with a penis reported pain when approaching orgasm without ejaculating. The mechanism behind it has never been properly studied.
What does blue balls mean, and do testicles turn blue?
It means a dull ache or heaviness in the testicles after prolonged arousal without orgasm. The clinical name is epididymal hypertension, and no colour change is involved.
How long do blue balls last?
Minutes to a couple of hours, easing as arousal fades. Past an hour, or if the pain is there while you rest, NHS guidance is to go to A&E.
How do you get rid of blue balls?
Waiting works. So does orgasm, including through masturbation, which was the most commonly reported relief in the survey data. Distraction, light activity, a warm or cool compress and standard over-the-counter painkillers all help.
Can blue balls cause permanent damage?
There is no evidence that it harms fertility or causes any long-term problem. Severe, persistent or recurring pain is worth assessing to find out what else is behind it.
Can women get blue balls?
In the equivalent sense, yes. 42.1% of participants with a vagina reported genitopelvic pain after arousal without orgasm, and 83.9% of them called it mild.
Do I need a GP referral for a private testicular ultrasound?
No. You can book directly, and it helps to bring any previous scans or recent blood results.
Persistent or recurring testicular discomfort?
A private colour Doppler testicular ultrasound can assess the testicles and surrounding structures for common structural causes. No GP referral is needed.
Book a testicular ultrasound (£219)