Types of Incontinence

Urinary Incontinence

1. Stress Urinary Incontinence (SUI)

• Definition: Involuntary leakage of urine with physical exertion, coughing, sneezing, or laughing.
• Mechanism: Increased intra-abdominal pressure exceeds urethral closure pressure; caused by weakened pelvic floor muscles or sphincter incompetence.
• Common in: Women (post-partum, post-menopausal), men post-prostatectomy.

2. Urgency Urinary Incontinence (UUI)

• Definition: Involuntary leakage accompanied by or immediately preceded by a sudden, compelling urge to void.
• Mechanism: Detrusor overactivity — the bladder contracts involuntarily.
• Common in: Older adults; associated with overactive bladder (OAB) syndrome.

3. Mixed Urinary Incontinence (MUI)

• Definition: A combination of both SUI and UUI.
• Most common in older women.

4. Overflow Incontinence

• Definition: Involuntary leakage from an overfull, poorly emptying bladder.
• Mechanism: Bladder outlet obstruction (e.g., BPH, urethral stricture) or detrusor underactivity leads to urinary retention and overflow.
• Common in: Older men with BPH; patients with diabetic neuropathy.

5. Nocturnal Enuresis

• Definition: Involuntary voiding during sleep.
• Can be primary (lifelong) or secondary (recurrent after a dry period).

6. Post-Micturition Dribble

• Definition: Involuntary loss of urine immediately after finishing voiding.
• Mechanism: Urine retained in the bulbar urethra after micturition, released subsequently.

7. Total (Continuous) Incontinence

• Definition: Continuous involuntary leakage of urine.
• Causes: Sphincter incompetence (e.g., after trauma/surgery), vesico-vaginal fistula, ectopic ureter.

8. Functional Incontinence

• Definition: Leakage due to inability to reach the toilet in time due to physical or cognitive impairment, not a bladder disorder per se.
• Common in: Elderly, patients with dementia, mobility limitations.

Fecal (Bowel) Incontinence

• Obstetric injury (most common in women) — sphincter defects occur in up to 32% of women after childbirth
• Prolonged labor, forceps delivery, episiotomy
• Medical conditions: diabetes, IBD, rectal prolapse, neurological disease, radiation proctitis
• Symptoms may appear decades after the initial injury

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