Pain or Swelling? Why Your Scrotum Is Hurting & What to Do Next

Pain or swelling in the scrotum can feel alarming. The scrotum is the loose sac of skin that holds and protects the testicles, blood vessels, and nerves. Because it contains sensitive structures, even minor issues can feel intense.

The good news: many causes of scrotum pain or swelling are treatable. The key is knowing when it's urgent and when it can safely wait for a routine medical visit.

Below is a clear, practical guide to help you understand what might be happening — and what to do next.

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Why Does the Scrotum Hurt?

Pain in the scrotum can range from mild discomfort to sudden, severe pain. It may affect one side or both. Common causes include:

1. Testicular Torsion (Medical Emergency)

Testicular torsion happens when a testicle twists inside the scrotum. This cuts off blood flow. Without quick treatment, permanent damage can occur.

Symptoms may include:

• Sudden, severe pain in one side of the scrotum
• Swelling
• Nausea or vomiting
• One testicle sitting higher than the other
• Abdominal pain

This is an emergency. Treatment is most successful within 6 hours.

If you're experiencing these symptoms and need help determining whether you should seek emergency care immediately, use this free AI-powered symptom checker for Testicular Torsion to assess your risk level right now. If symptoms are severe or sudden, go to the emergency room immediately.

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2. Epididymitis (Inflammation or Infection)

The epididymis is a small, coiled tube at the back of each testicle that stores sperm. When it becomes inflamed or infected, it causes pain in the scrotum.

Symptoms:

• Gradual onset of pain
• Swelling on one side
• Tenderness
• Fever
• Burning during urination
• Possible discharge

Epididymitis is often caused by bacterial infection, including sexually transmitted infections (STIs) in younger men. It is treatable with antibiotics, but medical evaluation is necessary.

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3. Orchitis (Testicular Inflammation)

Orchitis is inflammation of the testicle itself. It can occur alone or alongside epididymitis.

Symptoms:

• Testicular pain
• Swelling
• Fever
• Fatigue

Viral infections (like mumps) or bacterial infections can cause orchitis. Treatment depends on the cause.

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4. Inguinal Hernia

An inguinal hernia happens when tissue pushes through a weak area in the lower abdominal wall and may extend into the scrotum.

Symptoms:

• Bulge in the groin or scrotum
• Aching or pressure
• Pain that worsens with lifting or straining

Some hernias are not emergencies, but sudden severe pain, nausea, or vomiting may signal a trapped (strangulated) hernia — which requires urgent care.

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5. Hydrocele (Fluid Around the Testicle)

A hydrocele is a buildup of fluid in the scrotum. It's usually painless but can cause noticeable swelling.

Symptoms:

• Smooth swelling in the scrotum
• Little or no pain
• Feeling of heaviness

Hydroceles are often harmless but should still be evaluated to rule out underlying causes.

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6. Varicocele (Enlarged Veins)

A varicocele is an enlargement of veins inside the scrotum, similar to varicose veins in the legs.

Symptoms:

• Dull ache
• Feeling of heaviness
• Visible enlarged veins
• Symptoms worse after standing

Varicoceles are common and often not dangerous, but they can affect fertility in some cases.

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7. Trauma or Injury

A direct hit to the scrotum can cause significant pain and swelling.

Watch for:

• Persistent severe pain
• Increasing swelling
• Nausea
• Bruising

If pain does not improve within an hour or worsens, medical evaluation is important.

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8. Kidney Stones

Pain from kidney stones can radiate into the scrotum.

Symptoms may include:

• Sharp back or side pain
• Pain that moves toward the groin
• Blood in urine
• Nausea

The pain often comes in waves.

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When Is Scrotum Pain an Emergency?

Seek immediate medical care if you experience:

• Sudden, severe scrotum pain
• Swelling that appears quickly
• Nausea or vomiting with scrotum pain
• Fever with severe pain
• A high-riding or twisted-looking testicle
• Severe pain after injury

Time matters, especially with testicular torsion.

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What If the Pain Is Mild?

If your scrotum discomfort is mild and not sudden, you may:

• Rest and avoid strenuous activity
• Elevate the scrotum with supportive underwear
• Apply a cold pack (wrapped in cloth) for short periods
• Use over-the-counter pain relievers if appropriate

However, if pain lasts more than 24 hours, worsens, or is associated with urinary symptoms or fever, schedule a medical appointment.

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What to Expect at the Doctor's Office

If you see a healthcare provider, they may:

• Perform a physical exam of the scrotum
• Check for tenderness, swelling, or abnormal positioning
• Order a scrotal ultrasound (this is painless and common)
• Request urine tests
• Screen for infections if needed

Ultrasound is especially helpful for checking blood flow and ruling out torsion.

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Don't Ignore Changes in the Scrotum

It's important to know what's normal for you. Regular self-checks can help you notice changes early.

During a self-exam, gently feel for:

• Lumps
• Swelling
• Hard areas
• Differences in size

Not all lumps are cancer. Many are benign. But any new lump should be checked by a doctor.

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Common Myths About Scrotum Pain

Let's clear up a few misconceptions:

• "It will go away on its own." Sometimes yes, but not always. Severe or sudden pain should never be ignored.
• "It's embarrassing to talk about." Doctors treat scrotum concerns every day. It's routine for them.
• "If I can still walk, it's not serious." Some serious conditions still allow movement. Pain level alone isn't the only indicator.

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How to Lower Your Risk

While not all scrotum conditions are preventable, you can reduce risk by:

• Wearing protective gear during sports
• Practicing safe sex
• Treating urinary infections promptly
• Avoiding heavy lifting without proper technique
• Staying aware of changes in your body

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The Bottom Line

Scrotum pain or swelling is common — but it should never be dismissed without thought. Many causes are treatable and not life-threatening. However, some conditions, especially testicular torsion, require urgent medical care.

If your symptoms are sudden, severe, or worsening, seek emergency care immediately.

If you're uncertain whether your symptoms could be serious, consider using a free online symptom check for Testicular Torsion to guide your next steps.

Most importantly, speak to a doctor about any scrotum pain, swelling, or changes — especially if symptoms could be life-threatening or serious. Early evaluation can protect your health and, in some cases, preserve fertility and long-term function.

Your health is worth the conversation.