Acute Epididymo-orchitis Secondary to Enteric Organisms in Men Over 35
When acute epididymo-orchitis presents in men aged over 35, Gram-negative enteric organisms are the most likely causative pathogens. Recognising this shifts both the assessment and the choice of treatment away from the sexually transmitted infection-focused approach used in younger men.
Clinical Scenario & Risk Factors
This protocol applies to epididymo-orchitis most likely secondary to enteric organisms. Gram-negative enteric organism involvement is recognised in association with:
- Obstructive urinary disease
- Urinary tract surgery or instrumentation
- Insertive anal intercourse
Historically, enteric pathogens have been attributed as the predominant cause of epididymitis in the over-35 age group, while sexually transmitted infections are more commonly implicated below age 35.
Treatment Approach
Management centres on an oral fluoroquinolone antibiotic course, alongside general supportive measures including analgesia, rest, and scrotal support. The clinical goal is improvement in symptoms by three days.
The complete regimen — including drug selection, duration, and all clinical decision points — is available in the full structured protocol.
References
DOI: 10.1177/0956462417699356
- Gram-negative enteric organism risk factors include obstructive urinary disease, urinary tract surgery or instrumentation.
- Gram-negative enteric organisms: in men engaging in insertive anal intercourse.
- Historically, STIs have been attributed as the predominant cause for epididymitis in the <35 age group and enteric pathogens in the >35 age group.
- General advice: analgesia, rest and scrotal support.
- At three days if there is no improvement in symptoms, the patient should be seen for clinical review and the diagnosis should be reassessed.