ภาวะกลั้นปัสสาวะไม่อยู่ (UI): มีปัสสาวะเล็ดก่อนถึงห้องน้ำ

อัปเดตล่าสุด: 18 พฤษภาคม 2026

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Urge incontinence (UI) is defined as a sudden, overwhelming urge to urinate that is very difficult to suppress, resulting in involuntary urine leakage before reaching the toilet. UI is the 2nd most common type of urinary incontinence after stress incontinence, and is confirmed to be associated with aging and obesity. Interestingly, UI is predominant in males.

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The 3 major causes of Urge Incontinence

1. Overactivity of the bladder muscle (Detrusor Overactivity) — The bladder is designed to contract and empty when full. Normally, voiding is a controlled voluntary process. In detrusor overactivity, the bladder muscle contracts involuntarily and without warning, generating a sudden powerful urge that can cause leakage before the patient reaches the toilet
2. Poor bladder compliance — A normal bladder acts like a resilient balloon, expanding to store increasing volumes of urine. Any condition that reduces the bladder’s storage capacity forces urine to seek an exit through the urethra, resulting in urgency and leakage
3. Hypersensitivity of the bladder mucosa (sensory urgency) — The sensory nerve endings in the bladder lining overrespond to specific stimuli (caffeine, cold, bladder filling), triggering an exaggerated urge signal and causing leakage before the patient can reach the bathroom

Evaluation at my urology office includes a thorough history, physical examination, voiding diary, and necessary imaging studies to confirm the UI diagnosis and exclude other conditions.

AUA-recommended treatment options for Urge Incontinence — 3 levels

1. Behavioral therapy (first-line):
   • Bladder training — gradually extending the intervals between bathroom visits
   • Dietary modification — reducing bladder irritants
   • Avoiding bladder irritants such as caffeine and smoking
   • Pelvic floor muscle training (Kegel exercises)

2. Medications (second-line):
   • Antimuscarinic agents — block bladder muscle overactivity
   • Beta-3 agonists — relax the bladder muscle to improve storage
3. Intravesical Botulinum toxin (Botox) injection (third-line):
   • Botox is injected directly into the bladder wall via cystoscopy, temporarily paralyzing the overactive detrusor muscle
   • If the patient responds well, maintenance injections are required approximately every 6 months

Prognosis varies significantly among patients with urge incontinence. Goal-setting must be individualized — some patients aim for complete continence while others seek meaningful symptom reduction. A urologist-patient discussion is essential to align treatment expectations.

Frequently Asked Questions About Urge Incontinence

What is the difference between urge incontinence and stress incontinence?

Urge incontinence is urine leakage triggered by a sudden, uncontrollable urge to void — the bladder contracts involuntarily before the patient can reach the toilet. Stress incontinence, by contrast, is leakage caused by physical exertion that increases abdominal pressure (coughing, sneezing, lifting, laughing), without an urge sensation. UI is the 2nd most common type of incontinence, is more prevalent in males, and is associated with aging and obesity. Both conditions can coexist as “mixed incontinence.”

What lifestyle changes can improve urge incontinence?

Per AUA guidelines, first-line management is behavioral therapy. This includes bladder training (gradually increasing the time between bathroom visits), reducing or eliminating bladder irritants such as caffeine and alcohol, maintaining a healthy body weight, and pelvic floor muscle training (Kegel exercises). These interventions can significantly reduce urge episodes and leakage frequency without medications. Keeping a voiding diary to track fluid intake, voiding times, and leakage episodes helps both patient and urologist identify patterns and monitor progress.

When is Botox injection recommended for urge incontinence?

Intravesical Botulinum toxin (Botox) injection is recommended as a third-line treatment when behavioral therapy and oral medications have not provided adequate symptom control. The procedure is performed via cystoscopy under local anesthesia. Botox temporarily paralyzes the overactive bladder muscle, reducing involuntary contractions and urgency episodes. Effects typically last 6 months, after which repeat injection is required to maintain benefit. The procedure is safe when performed by an experienced urologist and is well-supported by AUA evidence guidelines.

If you are experiencing urge incontinence and would like specialist evaluation, Dr. Soarawee Weerasopone offers specialist consultations at Bangkok Hospital Headquarters. นัดหมายปรึกษาแพทย์.

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