EpididymitisMANAGEMENT

GENITOURINARY AND REPRODUCTIVE PRESENTATIONS · 12 SECTIONS

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421 items

☷ Legend

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Cardiovascular Presentations66▾

Respiratory Presentations47▾

Neurological Presentations77▾

Gastrointestinal Presentations63▾

Genitourinary and Reproductive Presentations44▾

Acute Kidney Injury (ATN)Acute Kidney Injury (Post-renal)Acute Kidney Injury (Pre-renal)Amniotic Fluid Embolism Balanitis Bladder Rupture Breast Abscess Cystitis Ectopic pregnancy Epididymitis Glomerulonephritis Hematuria (gross)Hydrocele Interstitial Cystitis Mastitis Mittelschmerz Nephrolithiasis Nephrotic Syndrome Flare Nutcracker Syndrome Orchitis Ovarian Cyst Rupture Ovarian torsion Paraphimosis Pelvic Congestion Syndrome Pelvic Inflammatory Disease (PID)Phimosis Priapism Prostatitis Pyelonephritis Renal laceration Ruptured ovarian cyst Testicular torsion Torsion of Appendix Testis Tubo-ovarian abscess Ureteral Rupture Urethritis Urinary Retention Urinary tract infection (uncomplicated)Urolithiasis (renal colic)Vaginal bleeding (non-pregnant)Vaginitis (Bacterial)Vaginitis (Candidal)Varicocele Vulvovaginal Hematoma

Infectious Disease Presentations146▾

Trauma Presentations88▾

Toxicologic Presentations67▾

Psychiatric Presentations25▾

Musculoskeletal and Rheumatologic Presentations89▾

Dermatology Presentations21▾

Environmental and Exposure Presentations26▾

Hematologic and Oncologic Presentations30▾

Pediatric-Specific Presentations13▾

Endocrine and Metabolic Presentations42▾

ENT and Maxillofacial Presentations21▾

Ophthalmologic Presentations15▾

Obstetric Presentations17▾

Systemic and Miscellaneous Presentations15▾

01Approach to the Critical Patient/attcp35

Immediate priorities

›Triage and stabilization

›Sepsis physiology

›Fever

›Tachycardia

›Hypotension

›Severe pain physiology

›Diaphoresis

›Vomiting

›If hemodynamic instability, initiate sepsis pathway

›Isotonic crystalloid 30 mL/kg for hypotension or lactate >= 4 mmol/L

›Broad-spectrum antibiotics within 1 hour for septic shock

›If suspected testicular torsion, immediate urology consult without delay for labs

›Time-dependent ischemic risk

›Ultrasound only if it does not delay definitive care

Red-flag pattern recognition

›Time-critical exclusions

›Testicular torsion exclusion

›Sudden onset severe unilateral scrotal pain

›High-riding testis

›Fournier gangrene exclusion

›Perineal pain out of proportion

›Crepitus

›Incarcerated hernia exclusion

›Irreducible inguinal mass

›Obstructive symptoms

Key concepts

›Working diagnosis framework

›Epididymitis definition

›Inflammation of epididymis with or without orchitis

›Infectious etiologies predominate

›Age-stratified pathogen likelihood

›Sexually transmitted pathogens

›Enteric gram-negative pathogens

›Immediate harms

›Missed torsion

›Untreated sepsis

›Abscess or pyocele

02History/hx46

Symptom characterization

›Presenting features

›Scrotal pain onset pattern

›Gradual onset over hours to days

›Sudden onset pattern

›Pain location and radiation

›Posterior scrotum

›Groin

›Swelling timeline

›Progressive enlargement

›Rapid enlargement

›Systemic symptoms

›Fever

›Chills

Genitourinary and sexual risk

›Exposure and risk profile

›Dysuria

›Urethritis symptoms

›Cystitis symptoms

›Urethral discharge

›Purulent

›Mucoid

›Sexual history elements

›New partner in last 60 days

›Condom use

›Insertive anal intercourse

›Enteric pathogen risk

›Fluoroquinolone coverage need

Predisposing conditions and triggers

›Host and anatomic factors

›Recent urinary tract instrumentation

›Catheter

›Cystoscopy

›Bladder outlet obstruction

›BPH symptoms

›Urinary retention

›Prior epididymitis

›Recurrence risk

›Resistant organisms risk

›Immunocompromise

›HIV

›Steroid therapy

PITFALLS

›Common diagnostic traps

›Reassurance from preserved cremasteric reflex

›Reflex can persist early torsion

›Reflex can be absent for other causes

›Assumption that all cases are STI-related

›Enteric pathogens common in older adults

›Enteric pathogens with anal intercourse

03Physical Exam/exam37

Scrotal examination

›Local findings

›Epididymal tenderness

›Posterior localization

›Focal to epididymal tail

›Testicular tenderness

›Orchitis association

›Diffuse tenderness pattern

›Swelling and erythema

›Scrotal wall edema

›Reactive hydrocele

›Cremasteric reflex

›Present

›Absent

Torsion-oriented exam

›Features increasing torsion probability

›Testis position

›High-riding

›Horizontal lie

›Pain onset profile

›Sudden onset

›Severe intensity at onset

›Nausea and vomiting

›Autonomic symptoms

›Disproportionate to urinary symptoms

Abdominal and inguinal exam

›Referred and alternative sources

›Inguinal canal

›Hernia

›Lymphadenopathy

›Abdomen

›Suprapubic tenderness

›CVA tenderness

PITFALLS

›Exam limitations

›Marked edema limiting palpation

›Lower threshold for ultrasound

›Lower threshold for urology consult

›Prehn sign reliance

›Non-specific

›Not a torsion rule-out

04Differential Diagnosis/ddx33

Life-threatening and must-not-miss

›High-risk conditions

›Testicular torsion

›ICD-10 N44.0

›Time-dependent salvage

›Fournier gangrene

›ICD-10 N49.3

›Necrotizing infection risk

›Incarcerated or strangulated inguinal hernia

›ICD-10 K40.3

›Bowel ischemia risk

Common mimics

›Alternative causes of acute scrotum

›Torsion of testicular appendage

›Blue dot sign

›Localized superior pole tenderness

›Orchitis

›Viral association

›Parotitis history

›Hydrocele or varicocele complications

›Chronic swelling baseline

›Acute pain trigger

›Scrotal cellulitis

›Diffuse skin tenderness

›No focal epididymal tenderness

Related GU infections

›Adjacent syndromes

›Urethritis

›Purulent discharge

›STI risk profile

›Prostatitis

›Perineal pain

›Tender prostate

›Pyelonephritis

›Fever

›CVA tenderness

05Laboratory Tests/lt43

Urine testing

›Urinalysis and culture set

›Urinalysis

›Pyuria

›Nitrites

›Urine culture

›Suspected enteric organisms

›Recent antibiotics exposure

›Urine pregnancy test for patients with uterus

›Medication safety implications

›Imaging selection implications

STI testing

›Nucleic acid amplification testing

›Neisseria gonorrhoeae NAAT

›Urine specimen

›Swab specimen based on exposure sites

›Chlamydia trachomatis NAAT

›Urine specimen

›Swab specimen based on exposure sites

›HIV testing

›New STI diagnosis trigger

›High-risk sexual exposure

›Syphilis serology

›New STI diagnosis trigger

›Genital ulcer history

Systemic and complicated infection labs

›Systemic evaluation

›CBC for systemic infection concern

›Leukocytosis

›Neutrophilia

›Basic metabolic panel for dehydration or sepsis concern

›Creatinine baseline for antibiotic selection

›Electrolyte derangements

›Lactate for sepsis physiology

›>= 2 mmol/L concern

›>= 4 mmol/L high risk

›Blood cultures for sepsis or bacteremia concern

›Fever with rigors

›Hypotension

PITFALLS

›Test limitations

›Normal urinalysis

›Possible isolated STI epididymitis

›Does not exclude epididymitis

›Negative NAAT early after exposure

›Timing-related false negatives

›Empiric treatment based on risk profile

06Diagnostic Tests/dt43

Scoring Systems

›Torsion probability tools

›TWIST score context

›Risk stratification for torsion mimic

›Not a definitive rule-out

›TWIST elements

›Testicular swelling

›Hard testis

›Absent cremasteric reflex

›Nausea or vomiting

›High-riding testis

›Interpretation use

›High-risk score triggers immediate urology

›Intermediate risk supports urgent ultrasound

MRI

›Limited role imaging

›Indications

›Indeterminate ultrasound with persistent concern

›Complex mass evaluation after acute episode

›Limitations

›Access delays

›Not for time-critical torsion exclusion

›Adjacent pathology evaluation

›Indications

›Suspected Fournier gangrene

›Suspected incarcerated hernia

›Findings

›Subcutaneous gas

›Abscess extension

›Limitations

›Not a primary epididymitis test

›Radiation exposure

Ultrasound (or US)

›Scrotal ultrasound with Doppler

›Primary goals

›Torsion exclusion

›Abscess or pyocele detection

›Epididymitis patterns

›Enlarged hypoechoic or heterogeneous epididymis

›Increased epididymal blood flow

›Torsion patterns

›Reduced or absent intratesticular flow

›Whirlpool sign of spermatic cord

›Limitations

›Early torsion with preserved flow

›Operator dependence

07Disposition/dispo31

Admission and transfer criteria

›Higher level of care triggers

›Sepsis physiology

›Hypotension after fluids

›Lactate >= 4 mmol/L

›Severe uncontrolled pain

›IV analgesia requirement

›Intractable vomiting

›Complications on ultrasound

›Abscess

›Pyocele

›Inability to exclude torsion

›Equivocal ultrasound

›Persistent high clinical concern

Discharge suitability

›Outpatient management criteria

›Hemodynamic stability

›No hypotension

›No persistent tachycardia after analgesia

›Oral intake tolerance

›Hydration adequate

›Oral antibiotics feasible

›Reliable follow-up

›Re-evaluation plan in 48 to 72 hours if not improving

›Urology follow-up for persistent symptoms

Follow-up timing

›Reassessment targets

›Symptom improvement window

›Pain improvement within 48 to 72 hours expected

›Swelling improvement over days to weeks

›If no improvement in 72 hours, reassessment for alternative diagnosis

›Torsion

›Abscess

›Tumor masquerade

08Treatment/t57

Supportive care

›Symptom control and local measures

›Analgesia

›Acetaminophen 1000 mg PO every 6 to 8 hours as needed

›Ibuprofen 400 to 600 mg PO every 6 to 8 hours as needed

›Antiemetic for nausea

›Ondansetron 4 mg ODT or PO every 8 hours as needed

›Scrotal support

›Athletic supporter

›Elevation

›Ice packs

›15 to 20 minutes on

›Barrier cloth to skin

Antibiotics for likely STI pathogens

›Empiric regimen for gonorrhea and chlamydia coverage

›Ceftriaxone 500 mg IM once

›If weight >= 150 kg, ceftriaxone 1000 mg IM once

›Class I recommendation based on national STI guideline consensus

›Doxycycline 100 mg PO twice daily for 10 days

›Contraindicated in pregnancy

›Photosensitivity counseling

Antibiotics for enteric pathogens

›Empiric regimen for urinary source or anal intercourse

›Ceftriaxone 500 mg IM once

›Gonorrhea coverage if risk present

›Dual-pathogen risk profile

›Levofloxacin 500 mg PO daily for 10 days

›QT prolongation risk

›Tendinopathy risk

›Alternative regimen for non-STI urinary source without gonorrhea risk

›Levofloxacin 500 mg PO daily for 10 days

›Avoid if high local fluoroquinolone resistance concern

›Avoid in pregnancy

Targeted therapy adjustments

›Culture and NAAT-directed changes

›If gonorrhea confirmed, partner management trigger

›Expedited partner therapy per local policy

›Abstinence until treatment complete and symptoms resolved

›If enteric organism cultured, narrow therapy to susceptibilities

›Duration 10 days typical

›Longer course if abscess or severe infection

Procedural and consult triggers

›Urology involvement criteria

›Suspected torsion

›Immediate consultation

›No discharge without exclusion

›Abscess or pyocele

›Drainage consideration

›Admission consideration

›Recurrent epididymitis

›Anatomic evaluation

›Malignancy exclusion if persistent mass

Medication contraindications and cautions

›Safety screening

›Doxycycline cautions

›Pregnancy contraindication

›Esophagitis risk

›Fluoroquinolone cautions

›Tendon rupture risk

›Aortic aneurysm disease caution

›Severe penicillin allergy context

›Ceftriaxone cross-reactivity low

›Allergy history detail needed

09Special Populations/sp30

Pregnancy

›Pregnancy-specific considerations

›Medication selection

›Avoid doxycycline

›Avoid fluoroquinolones

›Alternative chlamydia therapy

›Azithromycin 1000 mg PO once

›Test of cure planning

›Imaging choices

›Ultrasound preferred

›CT only for life-threatening alternate diagnosis

Geriatric

›Older adult patterns

›Pathogen likelihood shift

›Enteric gram-negative predominance

›Lower STI probability without exposure risk

›Predisposing factors

›BPH with retention

›Instrumentation

›Medication risks

›Fluoroquinolone adverse effects increased

›Renal dosing adjustments based on creatinine

Pediatrics

›Pediatric acute scrotum priorities

›Torsion probability higher in adolescents

›Lower threshold for emergent ultrasound

›Lower threshold for urology consult

›Prepubertal epididymitis considerations

›Viral or post-infectious etiologies

›Urinary tract anomalies consideration

›Weight-based antibiotic dosing

›Ceftriaxone 50 mg/kg IM once

›Maximum ceftriaxone 1000 mg once

10Background/b27

Epidemiology

›Frequency and demographics

›Common cause of acute scrotal pain in sexually active males

›Peak incidence in ages 19 to 35 years for STI-associated cases

›Increased enteric cases with older age

›Recurrence risk

›Higher with untreated partner exposure

›Higher with urinary obstruction

Pathophysiology

›Mechanisms

›Ascending infection route

›Urethra to epididymis via vas deferens

›Associated urethritis and prostatitis

›Inflammatory sequelae

›Reactive hydrocele

›Scrotal wall edema

›Complications

›Epididymal abscess

›Infertility risk with bilateral disease

Therapeutic Considerations

›Treatment rationale

›Early antibiotics

›Symptom duration reduction

›Complication prevention

›Pathogen-directed regimens

›Dual therapy when STI likelihood present

›Enteric coverage when urinary source likely

›Public health considerations

›Partner notification for STI-associated cases

›Abstinence until therapy complete

11Patient Discharge Instructions/pdi25

Copy discharge instructions

›Discharge counseling

›Diagnosis explanation

›Epididymitis or epididymo-orchitis

›Infection and inflammation of scrotal structures

›Medications

›Take antibiotics exactly as prescribed

›Finish the full course even if improved

›Symptom care

›Scrotal support and elevation

›Ice packs 15 to 20 minutes at a time

›Ibuprofen or acetaminophen as directed

›Sexual health

›No sex until symptoms resolved and antibiotics completed

›Partner testing and treatment if STI suspected or confirmed

›Return now for any of the following

›Sudden worsening pain

›New nausea or vomiting with severe pain

›Fever or rigors

›Fainting or weakness

›Rapidly increasing swelling

›Spreading redness to groin or perineum

›Inability to urinate

›Follow-up plan

›Recheck if not improving within 48 to 72 hours

›Urology follow-up for persistent swelling or mass

12References/r14

Guidelines and primary sources

›STI treatment guidance

›National STI treatment guidelines for epididymitis regimens

›Ceftriaxone plus doxycycline for STI-associated epididymitis

›Ceftriaxone plus levofloxacin for anal intercourse risk

›Partner management recommendations

›Partner evaluation and treatment for gonorrhea or chlamydia exposure

›Abstinence until therapy complete

›Urologic and emergency care sources

›Acute scrotum evaluation standards

›Doppler ultrasound for torsion exclusion

›Immediate urology consultation when torsion suspected

›Complicated infection management principles

›Admission for sepsis physiology

›Drainage for abscess or pyocele

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Reviewed by SymptomDx Medical Team · Last reviewed June 16, 2026

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