Causes of Lower Back Pain Accompanied by Unilateral Testicular Pain

Apr 01, 2022 Source: Cainiu Health
Dr. Wang Jianlong
Introduction
Pain in the lower back accompanied by pain on one side of the testicles is most commonly caused clinically by acute orchitis. In cases of acute orchitis, epididymo-orchitis or funiculitis (inflammation of the spermatic cord) frequently co-occur, which may lead to lower back pain. Physical examination typically reveals marked enlargement of the affected testicle, significant tenderness upon palpation of both the testicle and spermatic cord, thickening of the spermatic cord, and erythema of the scrotal skin. Patients often also present with urinary symptoms such as urinary frequency and urgency, as well as fever.

Testicular pain is one of the most common conditions encountered in andrology clinics. It often arises from trauma, inflammation, or tumors affecting the testes, which may impair the normal function of vital reproductive organs. What, then, are the possible causes of concurrent low back pain and unilateral testicular pain? The following section addresses this question.

Causes of Concurrent Low Back Pain and Unilateral Testicular Pain

Clinically, acute orchitis is the most common cause of simultaneous low back pain and unilateral testicular pain. Acute orchitis is frequently accompanied by epididymo-orchitis or funiculitis (inflammation of the spermatic cord), which may refer pain to the lumbar region. Physical examination typically reveals marked testicular enlargement, significant tenderness over both the spermatic cord and testis, thickening of the spermatic cord, and erythema of the scrotal skin. Systemic symptoms such as urinary frequency, urgency, fever, nausea, and vomiting are commonly present.

Another possible cause is urolithiasis—specifically, urinary tract stones. Such stones can induce lumbar pain that radiates to the inguinal region, thereby causing referred testicular pain. Therefore, patients experiencing concurrent testicular and low back pain should seek prompt medical evaluation to establish an accurate diagnosis and initiate appropriate treatment without delay.

Common causative pathogens of orchitis include Escherichia coli and Staphylococcus aureus. Risk factors often involve prolonged urinary retention, extended periods of sitting, phimosis or redundant prepuce, excessive alcohol consumption, unprotected or unhygienic sexual activity, and poor personal hygiene. Management of orchitis requires bed rest and systemic intravenous antibiotic therapy, with a typical treatment duration of approximately two weeks for full resolution.

The above outlines the primary causes of concurrent low back pain and unilateral testicular pain. We hope this information is helpful to you.

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