Testicular Pain but a Normal Ultrasound: What Could It Be?

Testicular pain with a normal ultrasound often means the cause is not a visible structural problem in the testicle itself. Common explanations include inflammation of the tube behind the testicle (epididymitis), pain referred from the groin, back or kidneys, and long-lasting scrotal pain where no single cause is found. A normal scan is reassuring about some conditions, but it does not end the assessment.

An ultrasound records what was visible on the day it was done. Pain that started later, or a problem that comes and goes, may not appear on it. This guide helps you work out what your scan did and did not answer. It cannot tell you the cause of your pain.

Testicular torsion happens when the testicle twists and cuts off its own blood supply. NHS warns it can lead to loss of the testicle if it is not treated quickly. MedlinePlus notes that surgery within about 6 hours of the pain starting usually saves most of the testicle, so time matters.

Torsion can twist and untwist. Healthdirect explains that the pain may stop on its own, and the American Urological Association describes intermittent torsion, in which the history fits but examination and ultrasound can be normal. A scan done between episodes, or a week ago, does not rule out a new twist today.

Go to an emergency department or call emergency services if you have:

• Sudden, severe pain in a testicle.
• Testicular pain with nausea, vomiting or tummy pain.
• Pain that lasts more than an hour or continues when you rest.
• A testicle that sits higher than usual, or rapid swelling or redness of the scrotum.

Book a prompt appointment with a GP or sexual health clinic for any of these, even if earlier imaging was normal. NHS advises seeing a GP urgently for a lump, swelling or change in a testicle:

• A new lump or swelling, or a change in the shape or feel of a testicle.
• One testicle becoming noticeably bigger than the other.
• Aching or discomfort that worries you or keeps coming back.
• Fever, pain passing urine or discharge from the penis alongside the pain.
• A varicocele that appears suddenly in an older man, which MedlinePlus says needs medical evaluation because it can signal a problem higher up, near the kidney.

Epididymitis is swelling and pain in the coiled tube behind the testicle. NHS describes pain that may start suddenly or gradually, with a tender, warm or swollen scrotum. In men under 35 it is most often caused by a sexually transmitted infection such as chlamydia or gonorrhoea; in older men a urinary infection is a more common cause.

Ultrasound may show an enlarged epididymis, but diagnosis also depends on examination and tests for infection, such as a urine test or a swab. If those were not done, it is reasonable to ask whether they are needed. NHS notes that symptoms often improve within days of treatment, but full recovery can take up to 3 months, and persistent symptoms may need further tests.

Pain felt in the testicle does not always start there. The British Association of Urological Surgeons (BAUS) lists nerve entrapment (for example after inguinal hernia repair), pelvic floor muscle problems, kidney stones, spinal disc disease and hip problems as causes of pain referred to the scrotum. It notes that problems with ligaments in the groin are the most common such cause.

A scrotal ultrasound looks at the testicles and nearby structures. It does not examine the spine, hip, kidneys or groin muscles. Clues worth reporting include pain linked to lifting, sport or certain postures, back or hip pain, a bulge in the groin, or pain that moves towards the side or back. A clinician may examine the groin, hip and lower back as well as the scrotum, and may suggest a urine test if a kidney stone is possible.

A varicocele is a group of enlarged veins in the scrotum, similar to varicose veins, and is most often on the left. MedlinePlus describes a dull ache or discomfort, though many men have no symptoms. It may be harder to feel or see when lying down.

If your ultrasound mentions a small varicocele, ask whether the clinician thinks it explains your pain or is an unrelated finding. If it was not mentioned, ask whether the scan was set up to look for one.

BAUS defines chronic scrotal pain as intermittent or constant pain in the testicle, epididymis or spermatic cord that lasts at least 3 months and significantly interferes with daily life. The usual symptom is a low-grade ache in one testicle, which may spread to the groin or penis and can be worse with exercise or ejaculation.

Causes can include ongoing inflammation, a hydrocele, a varicocele and pain after vasectomy, but often the scan is normal. Treatment depends on the likely cause and may involve medicines, nerve blocks or, for some, surgery. BAUS reports that around 7 in 10 men improve with some form of treatment, and a pain management clinic may help if first steps do not.

Bring the ultrasound report, any urine or swab results and a short record of when the pain happens.

• Did the ultrasound include blood-flow (Doppler) assessment, and was it done while I had pain?
• Were urine or sexual health tests done, and should they be?
• Could my pain be coming from my groin, back, hip or kidneys, and how would we check?
• Was a varicocele or other finding seen, and does it explain my symptoms?
• If my pain comes and goes, could intermittent torsion be possible, and what should I do in the next episode?
• If the pain continues, when would a urology or pain clinic referral be considered?

On SameCase, patients and verified doctors share de-identified cases. Seeing how others described the timing, triggers and tests behind their testicular pain can help you spot gaps in your own record and write sharper questions. Other cases cannot diagnose you or replace an examination, and sudden severe pain always needs emergency care first.