Family medicine

Urinary Incontinence

Involuntary loss of urine due to impaired bladder storage or sphincter function, classified as stress, urge, overflow, or functional incontinence.

Murtagh Diagnostic Strategy

CategoryDiagnosisKey DiscriminatorCantonese Question / Finding
Probability DiagnosisStress urinary incontinence (SUI)Leakage with cough/sneeze/exertion; multiparous woman; +ve cough test [1]「咳嗽嗰陣會唔會漏尿?」
Overactive bladder / Urge incontinence (UUI)Urgency with involuntary leakage; frequency ≥8/day; no specific clinical signs in women with detrusor overactivity [1]「有冇突然好急但忍唔到漏咗出嚟?」
Mixed incontinence (SUI + UUI)Both stress and urge features「兩種情況都有?」
Serious Not To MissBladder carcinomaPainless haematuria, >50y, smoking history「小便有冇血?你有冇食煙?」
Cauda equina syndromeSaddle anaesthesia, bilateral leg weakness, faecal incontinence, acute onset「坐嗰度有冇冇感覺?兩隻腳有冇突然冇力?」
Spinal cord compression (tumour/MS)Progressive neuro deficit + bladder dysfunctionNeurological exam: UMN signs in LL, sensory level
PitfallsUTI causing/worsening urgencyDysuria, fever, cloudy/smelly urine — reversible!「小便有冇赤痛?有冇臭味?」
Overflow incontinence (BPH / neurogenic)Constant dribbling + palpable bladder + large PVR [2]Palpable bladder on abdominal exam
Pelvic organ prolapse with occult SUIProlapse reduces SUI symptoms; unmasked after prolapse repair [1]「有冇覺得下面有嘢跌咗落嚟?」 Cough test after prolapse reduction
MasqueradesDiabetes mellitus → autonomic neuropathy → overflow incontinence [4]Polyuria, polydipsia, peripheral neuropathy, large PVR「有冇糖尿病?有冇手腳痹?」
Drugs (diuretics, anticholinergics, α-blockers, sedatives)Temporal relationship between drug initiation and incontinence [2]「最近有冇轉藥或者加藥?」
DepressionApathy → functional incontinence; antidepressants may worsen「心情點呀?有冇唔開心?」
Normal pressure hydrocephalusClassical triad: frontal dementia, apraxic gait, urinary incontinence [5]「行路有冇唔穩?記性有冇差咗?」
Trying to Tell Me Something?Embarrassment / social isolationAvoids social outings, sexual avoidance「呢個問題有冇令你唔敢出街或者影響你同伴侶嘅關係?」
Fear of cancer / surgeryHidden concern driving consultation「你最擔心啲咩?」

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