Epididymitis

Medically Reviewed

Epididymitis is a painful swelling of the tube behind the testicle, most commonly caused by chlamydia or gonorrhoea in young men. Diagnosis involves STI testing and clinical examination. Prompt antibiotic treatment usually resolves the condition within a few weeks.

Epididymitis: Key Facts

Incubation Period
Variable (days to weeks after STI infection)
Test Window
Tested when symptoms present; STI screening recommended
Results
24–48 hours
Treatment
Antibiotics (tailored to the causative organism)
Cure Rate
Excellent with prompt treatment
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Signs & Symptoms

Symptoms of Epididymitis

Common Symptoms

  • Testicular pain and swelling
  • Urethral discharge
  • Painful urination

Symptoms in Men

  • Swollen, red, or warm testicle
  • Testicular pain (usually one-sided)
  • Pain when urinating
  • Discharge from the penis
  • Fever in severe cases
  • Pain in the lower abdomen or groin
Next step

Book a same-day Epididymitis test

Consultation, examination, testing and treatment at our Harley Street clinic. Most results within 24 hours.

How It Spreads

How is Epididymitis Transmitted?

  • Usually caused by STIs (chlamydia, gonorrhoea) in younger men
  • Urinary tract infections in older men
  • Can follow urological procedures
Stay Protected

Prevention

  • Regular STI testing
  • Use condoms consistently
  • Prompt treatment of STIs
  • Partner notification and treatment
If Untreated

Complications if Untreated

  • Abscess formation
  • Chronic epididymitis
  • Reduced fertility (if bilateral or recurrent)
  • Testicular infarction (rare)
Common Questions

Frequently Asked Questions

Dr Mohammad Bakhtiar
Medically Reviewed

Dr Mohammad Bakhtiar

MD, PhD, LRCP, MSc, DHMSA

Sexual Health

GMC: 4694470Last reviewed: July 2026

All medical content is reviewed by qualified healthcare professionals registered with the General Medical Council (GMC).

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Consultation, examination, testing and treatment at our Harley Street clinic. Same-day appointments and walk-ins welcome.

Mon-Fri 9am-6pm, Sat-Sun 10am-2pm. Walk-ins welcome.