Epididymitis: A Comprehensive Guide
Medically reviewed by Andre Stone | MD, University of Pittsburgh School of Medicine on August 25th, 2026.
Published on April 3rd, 2026. Updated on September 28th, 2026.
Key Takeaways
Epididymitis is inflammation of the epididymis, the coiled tube that stores sperm behind each testicle
The condition causes significant scrotal pain, swelling, and can affect fertility if left untreated
Most cases are caused by bacterial infections, particularly sexually transmitted infections in younger men
Early antibiotic treatment typically resolves the infection within days to weeks
Chronic epididymitis can develop if acute cases aren't properly treated
Overview
Epididymitis is inflammation of the epididymis, a small coiled tube located behind each testicle. The epididymis stores and transports sperm from the testicles. When this tube becomes inflamed, it causes significant pain and swelling in the scrotum.
This condition affects men of all ages but is most common in men between 14 and 35 years old. About 600,000 men in the United States develop epididymitis each year. The condition can be acute (lasting less than six weeks) or chronic (lasting longer than three months).
Without proper treatment, epididymitis can lead to serious complications. These include abscess formation, chronic pain, and fertility problems. Early diagnosis and appropriate antibiotic treatment usually resolve the condition completely. Most men recover fully when they get medical help quickly. The epididymis is a very important part of the male reproductive system. Taking care of it protects your ability to have children in the future.
Symptoms & Signs
Epididymitis symptoms typically develop gradually over several days. The pain often starts mild and increases in severity. Most men experience symptoms on one side of the scrotum, though both sides can be affected.
Primary Symptoms
Scrotal pain and tenderness - Usually starts gradually and becomes severe, often worse when walking or sitting
Swelling of the scrotum - The affected side becomes visibly larger and feels warm to the touch
Painful urination - Burning sensation during urination, frequent urination, or urgent need to urinate
Discharge from the penis - Clear, white, or colored discharge, especially in cases caused by sexually transmitted infections
The pain may feel like a dull ache or sharp stabbing sensation. Some men also feel pain in the lower abdomen or lower back. The swelling can make wearing normal underwear uncomfortable.
When to Seek Care
Sudden onset of severe scrotal pain requires immediate medical attention. High fever with scrotal pain may indicate a serious infection. Blood in the urine or inability to urinate also needs urgent evaluation. If your pain is so bad you can't function, call your doctor right away. Don't wait to see if symptoms go away on their own. Getting treatment early prevents serious problems.
When to Seek Immediate Care
Seek emergency medical care immediately for sudden severe scrotal pain, high fever, or signs of a spreading infection. Sudden pain requires prompt evaluation because testicular torsion must be ruled out quickly.
Causes & Risk Factors
Age
Risk Factors and Common Causes
Risk patterns vary by age: STI-related cases are more common among men ages 14-35, while urinary-tract-related cases are more common among older men.
Genetics
Family history of urinary tract abnormalities or recurrent infections
Lifestyle
Unprotected sex, multiple partners, heavy lifting, or prolonged sitting
Other Conditions
Enlarged prostate, urinary tract infections, or previous genital surgery
Continue Learning
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Diagnosis
Medical History & Physical Examination
Your doctor will ask about your symptoms, sexual history, and recent infections. They'll want to know when symptoms started and how severe the pain is. A physical examination includes checking the scrotum for swelling, tenderness, and warmth. The doctor may also examine your abdomen and check for enlarged lymph nodes.
The physical exam provides important clues, but it may not reliably distinguish epididymitis from testicular torsion. If torsion is possible, urgent evaluation and appropriate imaging or surgical consultation may be needed. Your doctor will also check for signs of sexually transmitted infections and assess your prostate gland.
Diagnostic Testing
Urine tests - Check for bacteria, white blood cells, and sexually transmitted infections
Urethral swab - Collects sample from the urethra to test for chlamydia, gonorrhea, and other STIs
Ultrasound - Uses sound waves to examine the scrotum and assess blood flow when testicular torsion or another diagnosis is a concern
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Learn MoreTreatment Options
Treatment focuses on eliminating the infection and reducing inflammation. Most cases respond well to antibiotics when started early. Bupropion and erectile dysfunction concerns are unrelated to epididymitis treatment.
Conservative Treatments
Antibiotics - The regimen depends on the likely bacteria, STI test results, urinary risk factors, allergies, and local guidance. STI-related cases often require treatment for gonorrhea as well as chlamydia. A clinician should select the antibiotic regimen.
Pain management - Over-the-counter pain relievers like ibuprofen or acetaminophen to reduce pain and inflammation
Supportive care - Scrotal elevation, ice packs for 20 minutes several times daily, and bed rest during acute phase
Most antibiotics work best when taken at the same time each day. You might feel better after a few days, but finish all your medicine. Stopping early may leave the infection incompletely treated, so take the antibiotic for the prescribed duration unless your clinician tells you to stop or change it.
Advanced Treatments
Hospitalization - Required for severe cases with high fever, abscess formation, or failure to respond to oral antibiotics
Surgical drainage - Needed if an abscess develops that doesn't respond to antibiotics alone
Some men need IV antibiotics if their infection is very serious. Hospital stays are usually short, just a few days. Severe cases need closer watching to prevent permanent damage.
Living with the Condition
Daily Management Strategies
Wear supportive underwear to reduce discomfort during recovery. Avoid heavy lifting and strenuous activities until symptoms resolve completely. Apply ice packs for 15-20 minutes several times daily to reduce swelling. Take prescribed antibiotics exactly as directed, even if symptoms improve before finishing the medication.
Resting is one of the best things you can do while healing. Keeping the area clean and dry helps fight infection. Don't skip doses of your medicine even if you feel better.
Exercise & Movement
Avoid vigorous exercise, running, and heavy lifting during the acute phase. Light walking is generally acceptable if it doesn't increase pain. If you are concerned about testosterone levels or other hormonal symptoms, discuss them with a healthcare professional. Return to normal activities gradually as symptoms improve.
Your body needs energy to fight the infection. Activities that make pain worse should be avoided completely. It might take a few weeks before you're back to normal.
Prevention
Practice safe sex by using condoms consistently and getting regular STI testing
Use condoms consistently, obtain STI testing when appropriate, and seek care for urinary symptoms or difficulty emptying the bladder.
Stay hydrated and urinate regularly to prevent urinary tract infections
During recovery, change position or take breaks if prolonged sitting worsens discomfort.
Using protection during sex is the best way to avoid sexually transmitted infections. Getting tested regularly keeps you and your partner safe. Drinking enough water helps your body fight bacteria naturally.
Men with enlarged prostates should follow their doctor's recommendations for managing urinary symptoms. BPH treatment options can help prevent related complications. Lifestyle factors like cocaine use may affect overall reproductive health.
Frequently Asked Questions
Yes, untreated or chronic epididymitis can damage the epididymis and block sperm transport. Epididymitis can rarely affect fertility, particularly when inflammation is severe, affects both sides, or causes complications. Prompt evaluation and appropriate treatment can reduce the risk of complications, but antibiotics help only when a bacterial infection is present.
Acute epididymitis typically improves within 2-3 days of starting antibiotics. Many people begin to improve within a few days of appropriate treatment, but pain and swelling can take several weeks to settle. Persistent or worsening symptoms need reassessment, and chronic symptoms vary in duration.
Epididymitis itself is not contagious to other people. However, the bacteria causing it may be transmitted during sexual contact. If you have a sexually transmitted infection causing epididymitis, you can pass it to sexual partners.
Yes, epididymitis can recur, especially if the underlying cause isn't addressed. Men with anatomical abnormalities or chronic prostate problems have higher recurrence rates. Completing antibiotic treatment reduces recurrence risk.
Epididymitis often develops gradually, while testicular torsion often causes sudden severe pain. Symptoms can overlap, so new scrotal pain needs prompt medical evaluation and sudden or severe pain requires emergency care. Both require medical attention, but torsion is a surgical emergency. Testosterone levels aren't directly related to either condition.
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