Enuresis (Bedwetting & Daytime Wetting): Overview, Causes, & Treatment

Enuresis is the repeated involuntary or intentional voiding of urine during the day or night in children age 5+ (or developmental equivalent). It is not due to a medical condition (e.g., diabetes, UTI) or medication (e.g., diuretics).

DSM-5 Diagnostic Criteria

  1. Repeated voiding of urine into bed/clothes (≥2×/week for ≥3 months or causing distress).
  2. Chronological age ≥5 years (or equivalent developmental level).
  3. Not attributable to a medical condition (e.g., spina bifida, diabetes) or substance.

Subtypes:

  1. Nocturnal Enuresis (Most Common)
    • Bedwetting during sleep.
    • Primary: Child has never achieved consistent dryness.
    • Secondary: Child was dry for ≥6 months but regressed (often linked to stress).
  2. Diurnal Enuresis (Daytime Wetting)
    • Leakage while awake (e.g., at school).
    • May involve urgency, infrequent voiding, or “holding” behaviors.

Causes & Risk Factors

Biological/Physical:

  • Delayed bladder maturation (small capacity or overactive muscles).
  • Deep sleeper (failure to awaken to bladder signals).
  • Genetic factors (75% risk if both parents had enuresis).
  • ADHD or developmental delays (higher prevalence).

Psychological/Environmental:

  • Stress (e.g., new sibling, school anxiety, trauma).
  • Poor toilet training (overly punitive or lax approach).

Medical Considerations (Rule Out First):

  • Urinary tract infection (UTI), diabetes mellitus, sleep apnea, constipation.

Treatment & Management

1. Behavioral Interventions (First-Line)

  • Bedwetting Alarms (most effective long-term):
    • Wakes child at first sign of wetness to retrain brain-bladder connection.
    • Success rate: ~70% with consistent use for 3–6 months.
  • Bladder Training:
    • Scheduled voiding (every 2–3 hours), double-voiding before bed.
    • For daytime wetting: Teach pelvic floor exercises.
  • Positive Reinforcement: Reward charts for dry nights (avoid punishment).

2. Medical Treatments

  • Desmopressin (DDAVP):
    • Reduces nighttime urine production; works quickly but relapse is common.
  • Anticholinergics (e.g., Oxybutynin):
    • For overactive bladder (daytime wetting).

3. Lifestyle Adjustments

  • Fluid restriction 1–2 hours before bed (but ensure hydration during day).
  • Avoid caffeine/sugary drinks (irritate the bladder).

Prognosis

  • 15% annual spontaneous remission rate without treatment.
  • Most children outgrow enuresis by adolescence.
  • Secondary enuresis often resolves when stressor is addressed.

When to Seek Help:

  • If child is age 7+ and still wetting frequently.
  • If wetting causes distress, shame, or social avoidance.
  • If sudden onset (secondary enuresis) to rule out medical/psychological causes.