A 27-year-old man sits on the stretcher in jeans he can’t quite keep zipped, one hand braced under his right testicle and the other gripping the rail. He keeps shifting his weight, face tight with that sick, nauseated look that comes with pain nobody can fully hide. He says it started as a dull ache last night and now feels like a hot wire running up into his groin. The scrotum is tender, the skin is a little pink, and he’s too uncomfortable to joke anymore — but the question is what you do before you ever reach for an antibiotic.
— What’s your move? Read on.
Before you read
- Which patients need STI coverage, and which need enteric coverage?
- What complication changes disposition from discharge to admission?
When to Think of It
Gradual unilateral scrotal pain, epididymal tenderness/swelling, dysuria, urethral discharge, recent new sexual partner, urinary symptoms in older men, or post-instrumentation pain. Enter the diagnosis whenever the scrotum is painful but the story is subacute rather than apocalyptic.
Sick or Not Sick
Sick vs not sick = torsion until proven otherwise. The one call that matters most is whether the patient needs immediate urologic exploration for torsion or can be managed as epididymitis after exam/US and urine/STI testing.
The First Fifteen Minutes
- Severe acute unilateral pain, high-riding testis, absent cremasteric reflex, or equivocal exam → immediate urology consult for possible torsion, because delay risks testicular loss.
- Pain control: ibuprofen 600–800 mg PO or ketorolac 15–30 mg IV/IM now, because NSAIDs reduce inflammatory pain and improve mobility.
- If STI likely (age <35, new/multiple partners, urethral discharge, insertive anal sex) → ceftriaxone 500 mg IM once if <150 kg, or 1 g IM once if ≥150 kg, plus doxycycline 100 mg PO BID x 10 days, because it covers gonorrhea/chlamydia.
- If enteric organisms likely (older age, urinary tract pathology, recent instrumentation, insertive anal sex with urinary-source concern) → levofloxacin 500 mg PO daily x 10 days if gonorrhea is ruled out/very unlikely, because fluoroquinolones cover gram-negative urinary pathogens.
- If severe swelling, fever, vomiting, immunocompromise, or cannot take PO → IV fluids, analgesia, and admit for parenteral therapy/urology, because outpatient failure and abscess risk rise.
Definitive Care & Disposition
Confirm with urinalysis, urine culture when appropriate, and NAAT for gonorrhea/chlamydia. Scrotal ultrasound helps when torsion is still on the table, but a reassuring study does not replace clinical judgment if torsion remains plausible. Discharge only if pain controlled, torsion excluded, and the patient can take oral therapy; give strict return precautions for worsening pain, fever, or swelling. Admit if abscess, sepsis, uncontrolled pain, inability to tolerate PO, or concern for Fournier gangrene.
How This One Kills
Calling a torsion “epididymitis” and waiting for imaging or antibiotics while the testicle infarcts. The failure mode is delay disguised as reassurance.
The Differential — What Else Looks Like This
- Testicular torsion — sudden onset, high-riding testis, nausea/vomiting, absent cremasteric reflex; confusing it with epididymitis costs the testicle.
- Torsion of appendage — focal superior pole tenderness and “blue dot” sign; mistaking it for infection leads to unnecessary antibiotics and missed observation.
- Incarcerated inguinal hernia — groin mass, bowel symptoms, irreducible pain; confusing it with scrotal infection delays surgical care.
- Fournier gangrene — pain out of proportion, crepitus, toxicity; confusing it with simple epididymitis can be fatal.
The Second-Day Story
In older men or partially treated patients, epididymitis may look like vague groin heaviness, urinary frequency, or low-grade ache without dramatic scrotal findings. In diabetics or immunocompromised patients, fever may be absent, and the exam can be deceptively mild despite significant infection. Keep the diagnosis alive when urinary symptoms and unilateral tenderness coexist, but never let “mild-looking” override a torsion-like pain story.
Back to Our Patient
Back to our patient. The 27-year-old with the hot, tender right scrotum and gradual onset is epididymitis until torsion is excluded. He gets rapid exam focused on cremasteric reflex and testicular lie, UA/NAAT, and urgent ultrasound because the pain is unilateral and the diagnosis is not secure. If torsion signs are absent and STI risk is present, he receives ceftriaxone IM plus doxycycline, NSAID analgesia, scrotal support, and discharge with return precautions and urology follow-up if he can tolerate PO and pain is controlled.
Patient Presentation to Attending
How you’d present this patient on the floor — tight, pertinent positives and negatives, no rambling
“I have a 27-year-old man with one day of progressive right scrotal pain and swelling, plus dysuria and a new sexual partner. He’s nauseated but afebrile, with focal epididymal tenderness, no abdominal pain, and no hernia on exam; I’m checking cremasteric reflex and testicular lie because torsion is the key miss. Urinalysis and STI testing are pending, and I’m getting scrotal ultrasound if the exam isn’t clearly reassuring. If torsion is excluded, I’d treat as epididymitis with ceftriaxone IM plus doxycycline, NSAIDs, and discharge if pain is controlled and he can take PO.”
Study Directive
- Rehearse the torsion vs epididymitis bedside discriminator set: onset, nausea/vomiting, cremasteric reflex, lie, and focal epididymal tenderness.
- Write from memory the adult STI regimen and enteric regimen, then check your recall against a dosing reference.
- Practice a 30-second ultrasound request phrase that explicitly says “rule out torsion.”
- Build a one-line disposition rule: who can go home, who needs urology, who needs admission.
Recent Literature
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Review or guideline The 2024 European guideline on the management of epididymo-orchitis
Provides current guideline-based ED management for acute epididymo-orchitis, including age/risk-stratified empiric antibiotics for STI versus enteric pathogens and the need to exclude torsion in acute scrotal pain.