Onset
abrupt severe (torsion) vs gradual (infection)
Nausea/vomiting with torsion is classic
Trauma; prior self-resolving episodes (intermittent torsion)
Sexual activity / urethral symptoms (epididymitis)
Diabetes and immunosuppression (Fournier)
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← All presentations
Scrotal Pain & Swelling
Torsion until proven otherwise — imaging must not delay the OR.
Your objective: explain the approach, recognize important warning signs, then test your recall.
Abbreviations explained
- ACS
- Acute coronary syndrome
- OMI
- Occlusion myocardial infarction
- ECG
- Electrocardiogram
- PE
- Pulmonary embolism
- POCUS
- Point-of-care ultrasound
- QTc
- QT interval corrected for heart rate
- LBBB
- Left bundle branch block
- RBBB
- Right bundle branch block
- hs-cTn
- High-sensitivity cardiac troponin
- CTA
- Computed tomography angiography
- ICU
- Intensive care unit
Filter
The jobTorsion until proven otherwise — imaging must not delay the OR.
- Torsion until proven otherwise — high-riding transverse testis and absent cremasteric reflex go to the OR.
- Do not delay exploration for Doppler when suspicion is high.
- Salvage is highest within ~6 h, but operate on suspicion even later.
- Then Fournier, incarcerated hernia, and trauma.
Acute scrotal pain is testicular torsion until proven otherwise.
Salvage is highest if detorsion is within about 6 hours, but operate on clinical suspicion — do not wait out a clock. Doppler US helps when the diagnosis is uncertain; a high-riding, transverse testis with an absent cremasteric reflex goes straight to exploration. Fournier gangrene and incarcerated hernia round out the killers.
Testicular torsion Critical
Key: Sudden pain, high-riding transverse testis, absent cremasteric reflex — urology/OR immediately; US must not delay exploration when suspicion is high.
Fournier gangrene Critical
Key: Perineal pain, crepitus, sepsis, diabetes — broad antibiotics + debridement.
Incarcerated / strangulated inguinal hernia Critical
Key: Irreducible tender groin mass with obstruction signs — surgery.
Traumatic rupture / testicular hematoma Critical
Key: Scrotal trauma — US; rupture needs repair within hours.
Epididymo-orchitis Common
Key: Gradual pain, fever, dysuria; Prehn sign is unreliable — antibiotics by age and risk.
Torsion of the appendix testis Common
Key: Prepubertal, “blue-dot” sign; conservative care per urology.
Hydrocele / varicocele Common
Key: Chronic swelling, transillumination or bag-of-worms feel.
Tick what your patient has — the banner updates as you go.
Testis position & lie
high-riding, horizontal = torsion
Cremasteric reflex — absent in torsion
Point tenderness
upper pole (appendix testis), epididymis vs diffuse testis
Groin exam for hernia; perineal crepitus and odor
Prehn sign — supportive only, unreliable
Bedside
- Immediate urology consult when torsion is suspected — imaging must not delay the OR
- POCUS Doppler: flow absence; whirlpool sign of the cord
Labs
- Urinalysis & cultures (infection vs torsion overlap)
- CBC, CRP; lactate/sepsis screen for Fournier; glucose
Imaging
- Doppler US when diagnosis uncertain and OR not imminent
- CT pelvis for Fournier extent; X-ray for subcutaneous gas
Medication safety reminder
Use this as a first-pass prompt; verify all medications, doses, concentrations, contraindications, weight, pregnancy status, and local protocols before administration.
Check indication, allergy, route, renal/hepatic risk, interactions, monitoring, and local formulary.
Discharge
- Epididymitis on appropriate antibiotics (cover gonorrhea/chlamydia), appendix-testis torsion with NSAIDs per urology, resolved mechanical pain with follow-up.
Admit
- Epididymo-orchitis needing IV therapy, Fournier post-debridement, monitored equivocal cases.
Emergency surgery
- Testicular torsion (immediate exploration), Fournier debridement, strangulated hernia, testicular rupture.
Use objective reassessment and the local pathway.
Before the next decision · reassess and hand over
Use these learning prompts with the presentation’s pathway. They are not discharge criteria.
- Reassess: compare symptoms, observations and examination with the initial assessment and response to treatment.
- Warning signs for Scrotal Pain & Swelling:
- Sudden severe testicular pain with vomiting
- High-riding or transverse testis
- Absent cremasteric reflex
- Perineal pain with crepitus or sepsis (Fournier)
- Irreducible groin mass
- Scrotal trauma with persistent pain (rupture)
- Reconsider: check unresolved findings and alternative explanations, including the pitfalls below.
- Escalate: communicate deterioration, uncertainty or needs beyond the current setting.
- Plan the transition: identify outstanding results, responsibility for follow-up, patient understanding and specific return advice.
Clinical Pearls
- High-riding, transverse testis + absent cremasteric reflex = OR now, not Doppler first.
- Nausea/vomiting with acute scrotal pain is torsion until proven otherwise.
- Prehn sign is unreliable — do not use it to rule torsion in or out.
- Fournier is a clinical diagnosis; skin findings lag the pain and sepsis.
Pitfalls
- A negative US does not exclude torsion when the story fits — explore.
- Recurrent self-resolving pain = intermittent torsion — needs elective fixation.
- Epididymitis in an older diabetic can coexist with torsion.
- Fournier pain precedes skin changes — examine for deep tenderness and crepitus.
- Delaying surgery for CT in suspected torsion is the classic litigation case.
- Salvage falls after ~6 h but later exploration can still save a testis — do not withhold surgery because “it has been too long.”
PRACTICE REFRESHER
Rapid recall
Test your first action and the dangerous diagnoses before revealing the answer.
01 · First move
Before you scroll, what needs to happen first?
Torsion until proven otherwise — high-riding transverse testis and absent cremasteric reflex go to the OR.
02 · Immediate threats
Name at least two diagnoses that cannot wait.
Testicular torsion · Fournier gangrene · Incarcerated / strangulated inguinal hernia
PRIVATE TO THIS DEVICE
Your learning note
Capture a weak point, a teaching pearl, or a question to take to your next shift.
Review schedule starts when marked reviewed
Selected guidance · source check 2026-09-07. These 1 source links support selected teaching points, not a complete review of this topic. Check population, setting and local protocol before applying a recommendation.
- Rosen’s Emergency Medicine, 10th ed. (2023) — scrotal pain
- AUA urotrauma & acute scrotum guidance
- Tintinalli’s 9th ed. — urologic emergencies