What Causes Testicular Swelling and Pain in Men?

Testicular pain is a common condition among men. Although the severity of testicular pain is generally not life-threatening, it can cause significant discomfort and substantial psychological distress. So, what causes testicular swelling and pain in men? Let’s explore this together.

What Causes Testicular Swelling and Pain in Men?

1. Epididymitis

Acute epididymitis develops rapidly, typically resulting from bacterial infection, and usually affects only one side. Clinical manifestations include rapid unilateral scrotal swelling accompanied by pain, which may radiate to the ipsilateral inguinal region and lower abdomen. Severe cases may be associated with fever, chills, and nausea/vomiting. Acute epididymitis often spreads to the testicle, causing orchitis (testicular inflammation). Chronic epididymitis is relatively common and represents a frequent cause of testicular pain.

2. Varicocele

Varicocele predominantly occurs in young men and is more common on the left side. Clinical symptoms include scrotal enlargement on the affected side, along with a sensation of heaviness or dull pain—worsening with fatigue or prolonged standing, and improving or resolving upon lying down and resting. Varicocele impairs testicular function, leading to reduced semen quality and contributing to male infertility.

3. Prostatitis

Testicular pain is often one of the symptoms of chronic prostatitis. Patients with prostatitis commonly experience a sensation of heaviness or pain in the scrotum, perineum, and prostate region, potentially leading to depressive mood. The epididymis and testis are anatomically connected to the prostate via the ejaculatory ducts; thus, prostatitis may affect both the testis and epididymis, causing referred pain to these structures.

4. Testicular Torsion

Testicular torsion is a true urological emergency requiring prompt intervention. It most frequently occurs in younger men. While some cases follow excessive physical activity, onset is often sudden—occurring during sleep or at rest—and characterized by severe, acute testicular pain. Associated symptoms may include nausea, vomiting, testicular swelling, and marked tenderness.

The above outlines the primary causes of testicular swelling and pain in men. To prevent various urological and andrological conditions, men should practice regular testicular self-care. Should pain occur, timely medical evaluation is essential to identify the underlying cause and initiate appropriate, targeted treatment. We hope this information is helpful to you.