Testicular Pain and Scrotal Swelling: When Is It an Emergency?

Testicular pain and swelling of the scrotum are complaints that men often put off out of embarrassment. Yet some pain in this area signals an emergency in which time is critical, while other causes persist for months without being dangerous.

This article covers urgent and non-urgent causes, how the assessment is carried out and which symptoms call for going to an emergency department without delay.

Sudden, severe pain: testicular torsion

Testicular torsion is the twisting of the testicle around its own blood-supply cord, cutting off blood flow. It is most common in adolescence and in newborns, but it can occur at any age. Typical features:

Severe pain, usually on one side, that starts suddenly and keeps increasing
Nausea and vomiting accompanying the pain
The testicle sitting higher than usual and lying horizontally, with marked tenderness to touch
Pain sometimes spreading to the groin or lower abdomen; in children, the complaint may be described only as tummy ache

In torsion, time is decisive: the longer blood flow remains cut off, the lower the chance of saving it. The first hours are decisive, and waiting for the pain to settle on its own is not the right approach. When clinical suspicion is strong, surgical exploration is performed without losing time on tests; the testicle is untwisted and both testicles are fixed in place so that they do not twist again.

Pain with fever and redness: epididymitis and orchitis

Epididymitis is inflammation of the epididymis, the coiled duct system behind the testicle in which sperm mature; when the inflammation spreads to the testicle it is called epididymo-orchitis. Unlike torsion, the pain usually builds over a few days. It may be accompanied by:

Redness, warmth and swelling of the scrotum
Fever and malaise
Burning on urination, frequent urination or urethral discharge

In young, sexually active men, the cause is often a sexually transmitted infection (covered in a separate article on our site). In older men, urinary tract infections, prostate enlargement and urinary tract procedures come to the fore. Mumps can also cause orchitis. An important caution: fever and redness do not entirely rule out torsion; with pain of sudden onset, the distinction needs to be made by a doctor.

Trauma and inguinal hernia

Pain after a blow usually eases within a short time. If the pain does not subside, or if there is rapidly increasing swelling or bruising of the scrotum, the possibility of a testicular tear (rupture) or bleeding should be assessed. Some ruptures require early surgical repair.

An inguinal hernia can extend down into the scrotum and is noticed as a swelling that becomes more prominent on standing or straining and shrinks on lying down. If the contents of the hernia cannot be pushed back, the swelling becomes hard, and nausea, vomiting or inability to pass wind or stool are added to the picture, this is an incarcerated hernia requiring emergency assessment.

Dull, long-lasting pain: varicocele, hydrocele and cysts

Heaviness or aching that develops slowly over months is generally not urgent, but the cause should be identified:

Varicocele: A dilation of the testicular veins, most often on the left side. A sense of heaviness or dragging that increases with prolonged standing and towards the end of the day is typical, and it eases on lying down. Its link with infertility and its microsurgical treatment are covered elsewhere on our site.
Hydrocele: A collection of fluid between the membranes surrounding the testicle. It is usually painless; as it enlarges, it causes heaviness and cosmetic concern. A new hydrocele in an adult needs ultrasound to exclude underlying infection, trauma or tumour.
Spermatocele and epididymal cyst: Soft, smooth cysts felt at the upper back part of the testicle, separate from the testicle itself. Most are harmless and are simply monitored.

Chronic scrotal pain and its link with the pelvic floor

Intermittent or constant testicular pain lasting three months or longer is called chronic scrotal pain. Examination and ultrasound may be normal; this does not mean the pain is not real. It may arise from nerve sensitisation, a previous operation (such as hernia repair or vasectomy) or neighbouring structures.

Chronic scrotal pain is often seen together with tension in the pelvic floor muscles and chronic prostatitis/chronic pelvic pain syndrome. Pain that worsens on sitting, aching during or after ejaculation, and urinary complaints suggest this connection. Kidney stones and lumbar disc problems can also refer pain to the testicle.

A painless hard lump: suspicion of testicular cancer

One of the findings that deserves the closest attention is a painless, hard lump arising from within the testicle. Testicular tumours are most common in young men between 15 and 40 years of age. A history of an undescended testicle and a family history of testicular cancer are risk factors.

The simplest way to notice a change early is testicular self-examination. Once a month, after a warm shower when the scrotum is relaxed, each testicle is examined separately by gently rolling it between the thumb and the other fingers. The soft structure at the upper back is the normal epididymis. If hardness, a nodule or a marked difference in size between the two sides is found in the testicle itself, a urologist should be consulted without waiting. Detected early, testicular tumours respond well to treatment.

Assessment and treatment approach

The assessment begins with a detailed history and examination, covering how the pain started, accompanying complaints, trauma and sexual history. The main diagnostic tools are:

Colour Doppler ultrasound: Shows blood flow in the testicle, whether a lump arises from inside or outside the testicle, fluid collections and dilated veins. When suspicion of torsion is strong, surgery should not be delayed for an ultrasound.
Urinalysis and urine culture: Performed when infection is suspected; additional tests for sexually transmitted organisms are requested if needed.
Blood tests: Tumour markers are measured when testicular cancer is suspected.

Treatment is determined by the cause. Torsion needs emergency surgery. Epididymitis is treated with antibiotics suited to the causative organism, rest, scrotal support and cold application; where a sexually transmitted organism is involved, treatment of the partner also comes into consideration. Symptom-free hydroceles and cysts are monitored; surgery is considered when symptoms are significant. When testicular cancer is suspected, treatment begins with removal of the testicle through a groin incision; a needle biopsy through the scrotum is not performed. In chronic scrotal pain, pain-relieving and anti-inflammatory treatment, pelvic floor physiotherapy and nerve blocks are used in a stepwise manner; in selected patients, microsurgical denervation of the spermatic cord may be considered.

When should a doctor be consulted?

Situations requiring an emergency department without delay:

Sudden, severe pain in the testicle, particularly when accompanied by nausea or vomiting
The testicle appearing drawn up or lying sideways
Unexplained groin, abdominal or testicular pain in a child or adolescent
Pain that does not subside after a blow, rapidly increasing swelling or bruising
High fever with rapidly spreading redness, darkening of the skin or an unpleasant odour
A hard, painful groin-scrotal swelling that cannot be pushed back

Situations in which seeing a urologist within a few days is advised:

Painless hardness, a nodule or a change in size of the testicle
Brief episodes of severe pain that resolve on their own
Gradually increasing testicular pain with urinary complaints or discharge
A sense of heaviness that increases on standing, or palpable dilated veins
Testicular pain lasting longer than three months or affecting daily life

Testicular pain is not always a sign of serious disease, but sudden, severe pain should be treated as an emergency. Long-lasting dull pain and painless lumps, while not urgent, are findings that should always be assessed. Assoc. Prof. Zülfü Sertkaya practises in urology and andrology in Istanbul; assessment and treatment planning in testicular pain and scrotal swelling are carried out with individual assessment and confidentiality.

Frequently Asked Questions

Should I still see a doctor if the testicular pain goes away on its own?

Yes. Episodes of sudden, severe pain that resolve spontaneously may be a sign of intermittent torsion, in which the testicle twists and untwists by itself. Because there is a risk of it twisting again, a urological assessment is advised. If necessary, fixing the testicle in place may be planned.

How are torsion and epididymitis told apart?

In torsion, the pain usually starts suddenly and very severely, often with nausea and vomiting. In epididymitis, the pain builds gradually over a few days, and fever, redness and urinary complaints are more prominent. However, this distinction cannot be made reliably from symptoms alone; pain of sudden onset requires emergency assessment.

Is every lump felt in the testicle a tumour?

No. Soft cysts at the upper back of the testicle, fluid collections (hydrocele) and dilated veins (varicocele) are far more common, and most are harmless. The finding that raises suspicion of a tumour is a hard, usually painless lump arising from the testicle itself. The distinction is made through examination and colour Doppler ultrasound.

How often should testicular self-examination be done?

It is recommended once a month, after a warm shower when the scrotum is relaxed. Each testicle is gently rolled between the fingers separately to check for hardness, a nodule or a difference in size. If a change is noticed, a urologist should be consulted without waiting.

Medical Disclaimer: The content on this page is for general information only and does not replace a physician's examination. Always consult a doctor for a personal diagnosis and treatment.