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What Causes Testicular Pain or Swelling? Can It Cause Infertility?

adminMedical Content Specialist
⏱ 7 Mins Read
📅 16 Sep, 2026

Testicular pain or swelling does not necessarily suggest a problem with fertility. The impact on fertility really depends on what the underlying cause is and how serious it is. For example, if it has affected sperm production or the reproductive system altogether, there is a chance of being infertile.

What Causes Testicular Pain or Swelling?

Testicular pain and swelling can have different causes. Some of these causes develop in the testes or scrotum, while others involve pain referred to the testes from other areas, like the groin or abdomen.

Varicocele

Varicocele is the abnormal and sometimes painful dilation of the veins in the scrotum, just as varicose veins happen in the legs. This condition almost always causes a very uncomfortable, dragging, sore kind of discomfort that seems to worsen more in the evening hours or after a lot of time being on one’s feet. Usually, the problem disappears a little bit when one is lying down.

Researchers have known that varicocele causes a reduction in sperm count as well as poor sperm mobility, and they consider it an infertility issue of concern. It is quite rare, though, that every man with a varicocele becomes infertile.

Epididymitis

The epididymis is an elongated, coiled tube situated behind the testicles that mainly serves as a reservoir and transport pathway for spermatozoa. If the epididymis becomes red, swollen, and painful because of some disease, the term is epididymitis; infection is usually the most common trigger. Some STIs like chlamydia and gonorrhoea also act as pathogens causing epididymitis in some cases, while others not mentioned here may contribute to the same condition.

Possible signs and symptoms can be:

Infection may compromise fertility when it causes very serious injury to the reproductive tract or in case of prolonged infection, which may block or prevent the passage of sperm completely. Because of this, healthcare providers need to detect and intervene properly in any suspected case.

Orchitis

Orchitis is inflammation of one or both testicles, mainly caused by a bacterial or viral infection. Besides, Orchitis is an inflammation of the testicles that may occur due to bacterial infection or viral infection. It leads to pain, tenderness, and swelling. In some severe conditions, the damaged testicle caused by infection might cause the interruption of sperm production

Testicular Torsion

Doctors recognize testicular torsion as the primary reason for the sudden appearance of testicular pain. The twisting of the spermatic cord, a bundle of tissue that connects a testicle, cuts off the testicle’s supply of blood.

Testicular torsion can bring on sudden and intense pain, as well as swelling of the testicle. These symptoms could often be accompanied by nausea and vomiting. (Mayo Clinic) Make sure to seek urgent medical help when this condition occurs. A quick response is really important because a doctor can permanently harm the testicle and may have to remove it if the blood flow to it is cut off for too long. Also, the body impacts sperm production, and the doctor threatens fertility.

Injury or Trauma

The physical trauma inflicted by a direct hit to the testicles, whether in sports or accident, or physical activity, may cause pain, bruising, and swelling of the affected area. At worst, serious trauma could damage the affected testicle entirely, thereby needing to undergo medical treatment. (Mayo Clinic)

The degree of the damage and whether one or both testicles are affected mainly determine if an injured testicle will cause infertility.

Hydrocele

The condition called a hydrocele develops when fluid forms around a testicle, which in turn leads to a swollen scrotum. Hydroceles are mostly painless, yet with a big amount of fluid you may feel your scrotum is heavy or even painful at times. 

A hydrocele does not directly lead to fertility issues. If it were the case, the condition that leads to the swelling may be the reason why infertility is a concern and needs evaluation.

Inguinal Hernia

Inguinal hernia is the displacement of the body’s tissues, most commonly part of the intestine, through a defect located on the floor of the abdominal wall, in the vicinity of the groin. One of the most prominent symptoms is a bulge or swelling that goes as low as the scrotum, with pain and discomfort possibly following it. (Mayo Clinic)

Others

Conditions like spermatocele, testicular mass, inflammation of the prostate gland (prostatitis), and various forms of urinary tract infection can also cause swellings of the testicles and scrotum that are not due to infection or injury. Sometimes, kidney stones can also cause pain in the testicular area which, though it is felt there, originates from a different location.

Can Testicular Pain or Swelling Cause Infertility?

It’s possible, but only at times

The most vital consideration is that pain or swelling is a symptom, not a diagnosis. Some problems that result in those symptoms may have little or no effect on fertility, but others could affect either sperm creation or sperm delivery.

Take, e.g., a varicocele may reduce sperm count and sperm quality, and infections can cause inflammation or scarring that interfere with sperm health or movement. Testicular torsion can affect blood supply, and without prompt medical intervention, doctors may even hamper sperm production.

A man experiencing long-term testicular symptoms and, at the same time, having problems with conception will probably require a fertility study, which involves a physical examination, a semen test, hormone level analysis, and a scrotal ultrasound if indicated clinically.

When Should You See a Doctor?

Do not shrug off symptoms like testicular pain or swelling, particularly if you do not know the underlying issue.

Get yourself checked immediately if any of the signs below are present:

Go to the nearest hospital for those signs, as they can indicate symptoms of testicular torsion that needs treatment as soon as possible; if you feel a lump with unexplained pain, experience discomfort while peeing, or face fertility problems, think about seeing a doctor.

Also, if the symptoms persist or come back, a lump in the testis, pain when going to the toilet, etc., are present, then you have to consult a doctor. 

How to Diagnose?

An initial assessment typically involves the doctor taking the patient’s history and performing a doctor’s clinical examination. Further tests, based on the presenting signs and symptoms, might involve scrotal ultrasound, urine and infection tests, hormone levels, and semen analysis.

Management is completely dependent on what causes it first and foremost. Infections may need adequate drugs, while major issues like a sizable varicocele or testicular torsion may necessitate surgical intervention.

Testicular Pain and Male Fertility: Don’t Ignore the Signs

Testicular pain or swelling doesn’t automatically mean a man is infertile, though. Still, some underlying conditions could influence not only sperm production but also sperm quality and the reproductive tract, so healthcare providers must thoroughly evaluate persistent symptoms.

Male fertility assessment at Zemya IVF& Fertility Clinics can reveal the reason for the infertility problem. This also covers sperm quality and reproductive health. If there is continuous testicular pain, testicular swelling, or infertility, a consultation with a specialist urologist, andrologist, or fertility expert can be of great help in identifying the cause and deciding on the right action to take.

Frequently asked questions

What impact does a varicocele have on male fertility?+

Quite simply, varicocele can mean less sperm is being produced and/or lower-quality sperm is being produced, though that doesn’t mean a man with varicocele will not be able to conceive naturally many times.

Will any testicular swelling automatically mean you won't be able to have kids?+

Not necessarily. Swellings can result from various underlying issues, not all of which would interfere with fertility.

Are you able to produce a good quantity of healthy sperm after having a testicular infection?+

There are some infections known to damage or hamper the production of sperm and health, and in extreme cases, can mean a fibrous blockage of the reproductive organs.

Do you need to seek medical help or be taken as an emergency when you get a sudden testicular pain?+

Actually, the severity of testicular pain might signify a testicular torsion, which is an emergency condition and demands timely professional care.

If a man is experiencing testicular pain does he still have the chances to have father a child?+

Well, it is possible. Whether he can father a child or not largely relies on the underlying condition and the extent to which sperm production or transport has been disrupted. It usually helps to undergo an evaluation, including a semen analysis, for a more precise determination.

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