Image 1 - Prescription: Balanoposthitis

Prescribed Treatment:

• Amoxicillin-Clavulanate covers aerobic gram-positive and gram-negative bacteria (broad-spectrum)
• Metronidazole adds anaerobic coverage - very important because anaerobic bacteria are a key cause of infective balanoposthitis. The NICE CKS guidelines actually recommend oral metronidazole 400 mg BD for one week as first-line, with co-amoxiclav as an alternative option
• T-Bact (Mupirocin) ointment is a topical antibiotic applied locally to reduce surface bacterial load and promote healing; though textbooks more commonly mention topical bacitracin/nystatin, mupirocin is used in practice for its anti-staphylococcal and anti-streptococcal activity

Image 2 - Lab Requisition: STI Screening Panel (Age 14-20)

• Balanoposthitis in a sexually active young person (14-20 years) raises concern for an underlying STI as the triggering cause
• HIV, Hepatitis B & C, and Syphilis (VDRL) are the four standard STI serology tests ordered together in this setting
• Recurrent or atypical balanoposthitis that does not respond to standard therapy is an indication to rule out HIV
• Syphilis (VDRL positive) can present with penile lesions mimicking or co-existing with balanoposthitis

• The patient's young age (14-20) makes safe sex counselling and STI screening particularly appropriate
• Diabetes screening (fasting glucose) would also be warranted if there is a history of recurrent episodes, as balanoposthitis is a common presentation of undiagnosed diabetes

Red Flags & Complications of Balanoposthitis

🚨 EMERGENCY - Attend A&E / Immediate Urological Referral

• The retracted foreskin becomes trapped behind the glans and cannot be reduced
• This is a urological emergency - the constricting band cuts off venous/lymphatic drainage, causing progressive oedema and ischaemia of the glans
• If manual reduction fails in the ED, a dorsal slit or emergency circumcision is needed
• Signs: swollen, painful, trapped foreskin; glans turning dusky/dark; patient unable to void

• The most feared complication - a rapidly spreading polymicrobial necrotizing fasciitis of the perineum and genitalia
• Mortality ranges from 12-30% even with modern treatment - Tintinalli's Emergency Medicine, p. 634
• Starts as what looks like a "simple" local infection but progresses rapidly, especially in immunocompromised patients (diabetics, HIV+, alcoholics)
• Mechanism: microthrombosis of subcutaneous vessels → gangrene of overlying skin
• Red flags pointing to Fournier's:
  • Crepitus on palpation (gas in tissues - pathognomonic)
  • Black/necrotic skin patches with sharp demarcation
  • Rapidly spreading erythema beyond the glans into perineum/scrotum/abdominal wall
  • Severe disproportionate pain (pain far exceeding the visible wound)
  • Systemic sepsis signs: high fever, tachycardia, hypotension, confusion
• Treatment: IV piperacillin-tazobactam + vancomycin + metronidazole, urgent surgical debridement, ICU admission. Imaging (CT) to assess extent - but should NOT delay surgical consultation.

• Severe oedema of the prepuce obstructs the urethral meatus
• Patient cannot pass urine at all, or is in significant pain trying
• Requires catheterisation + urgent urology referral

⚠️ URGENT - Same-day/Next-day Urology or Specialist Referral

• Erythema extending onto the penile shaft, scrotum, or perineum
• Warrants IV antibiotics and admission - Rosen's Emergency Medicine states children with "signs of more than mild cellulitis should be admitted for IV antibiotics"

• Fever, rigors, tachycardia, hypotension, or altered mental status alongside local inflammation
• Indicates bacteraemia - requires IV antibiotics, blood cultures, and admission

• No improvement after 48-72 hours of appropriate oral antibiotics
• Suggests resistant organism, underlying immunosuppression (undiagnosed HIV/diabetes), or an atypical cause (e.g. herpes, syphilis)
• Warrants reassessment, swab cultures, HIV/HbA1c testing, and urology review

• Fluctuant, pointing swelling under the foreskin or on the glans
• Requires surgical incision and drainage - antibiotics alone will not resolve an abscess

📋 NON-URGENT but Important - Elective Urology Referral

• Multiple episodes are a strong indication for circumcision - Bailey & Love confirms: "Recurrent balanoposthitis requires circumcision"
• Also warrants diabetes screening (HbA1c), HIV testing, and a swab for candida/dermatophytes

• Scarring from repeated infections leads to pathological phimosis
• Phimosis is a risk factor for penile carcinoma and warrants urology referral

• A persistent ulcer, mass, or indurated plaque that does not resolve after treating the infection
• Requires urgent 2-week suspected cancer pathway referral to exclude penile squamous cell carcinoma
• Lichen sclerosus (BXO - Balanitis Xerotica Obliterans) is a premalignant condition that can look like chronic balanoposthitis

Summary Table