Epididymo-orchitis: Symptoms, Causes, and Treatment in the UK

Epididymo-orchitis is a condition characterised by inflammation of both the epididymis (the coiled tube at the back of the testicle that stores and carries sperm) and the testis (the testicle itself). While they can occur independently—known as epididymitis or orchitis—they often occur together due to their anatomical proximity.

In the UK, this condition is a frequent reason for men to seek medical advice regarding scrotal pain. It can affect men of any age, though the underlying cause often differs depending on the stage of life. According to NICE (National Institute for Health and Care Excellence) guidelines, it is vital to distinguish between infectious causes and surgical emergencies like testicular torsion.

The symptoms of epididymo-orchitis typically develop over one or two days. Recognising these signs early is key to successful treatment. British patients often report:

• Scrotal Swelling: One side of the scrotum may become significantly larger, red, and warm to the touch.
• Pain: A dull ache or sharp pain that gradually intensifies. This pain may radiate to the groin or lower abdomen.
• Ureteral Symptoms: Pain when urinating (dysuria) or a frequent, urgent need to go.
• Discharge: Discharge from the tip of the penis, particularly if the cause is an STI.
• Systemic Signs: Feeling generally unwell, sometimes with a fever or chills.

If you noticed a very sudden onset of severe pain (within minutes), this may indicate testicular torsion, which is a medical emergency requiring an immediate visit to A&E.

Infectious Causes

The vast majority of cases in the UK are caused by bacteria. The type of bacteria often depends on age and sexual history:

• Sexually Transmitted Infections (STIs): In men under 35, the most common causes are Chlamydia trachomatis or Neisseria gonorrhoeae. These are passed through unprotected sexual contact.
• Urinary Tract Infections (UTIs): In older men or those with prostate issues, enteric bacteria like E. coli are more common. These bacteria travel from the bladder or prostate to the scrotum.

Non-Infectious Causes

Less commonly, the condition can be caused by the mumps virus (viral orchitis), certain medications like amiodarone, or physical trauma to the groin. In rare cases, structural abnormalities in the urinary tract can predispose individuals to recurrent infections.

When you consult a healthcare professional, the focus is on identifying the causative agent. You will likely be asked for a urine sample or a urethral swab to check for STIs and common bacteria. NHS guidance suggests that treatment should begin immediately if an infection is suspected, even before lab results are back.

Antibiotics

The choice of antibiotic depends on the suspected source. If an STI is likely, you may be prescribed a combination involving a single injection or a course of tablets like doxycycline. For UTI-related infections, antibiotics such as ciprofloxacin or ofloxacin are frequently used. It is essential to finish the entire course, even if symptoms improve quickly.

Supporting Recovery

To manage pain at home, you can use paracetamol or ibuprofen. Resting and wearing supportive underwear (rather than loose boxers) can help reduce discomfort by limiting the movement of the inflamed area.

If you are experiencing mild to moderate discomfort or have noticed swelling that is developing gradually, you can speak to a GP online. An online consultation is a discreet and efficient way to discuss your symptoms, especially if you suspect an STI and require a prescription for antibiotics or referral for testing.

A UK online doctor can assess your history, provide clinical advice, and issue a private prescription for the necessary medication. They can also provide a sick note if your condition makes it difficult to work during the acute phase. However, if your pain is excruciating or occurred very suddenly, you must seek in-person emergency care immediately to rule out torsion.

Most men recover fully from epididymo-orchitis with no lasting effects. However, if left untreated, it can lead to:

• Abscess Formation: A collection of pus within the scrotum.
• Chronic Pain: Long-term discomfort in the epididymis.
• Infertility: Severe inflammation can damage sperm production or cause blockages in the tubes.

Prevention involves practicing safe sex with condoms to avoid STIs and staying hydrated to reduce the risk of UTIs. If you have been diagnosed with an STI-related infection, your sexual partners should also be tested and treated to prevent reinfection.