Bedwetting (Nocturnal Enuresis): Causes and When to Seek Help

Bedwetting is involuntary—not a behavior to induce. It affects 15% of 5-year-olds, 5% of 10-year-olds, 1–2% of teens. Most outgrow it.

Primary Causes

• Developmental delay: Bladder capacity, ADH rhythm, arousal threshold not yet mature.
• Genetics: 77% risk if both parents had enuresis; 44% if one.
• Low nocturnal ADH: Inadequate urine concentration at night.
• Small functional bladder capacity.
• Sleep arousal disorder: Difficulty waking to bladder signals.
• Constipation: Rectal distension compresses bladder.
• Psychosocial stress: Can trigger secondary enuresis (after 6+ months dry).
• Medical: UTI, diabetes, sleep apnea, spinal cord issues (rare).

When to Consult a Clinician

• Age ≥6–7 years with regular bedwetting.
• Secondary enuresis (relapse after dryness).
• Daytime symptoms (urgency, frequency, incontinence).
• Pain, hematuria, excessive thirst.
• Significant distress to child/family.

Evidence-Based Treatments

• Bedwetting alarm (enuresis alarm): First-line; conditions arousal response. ~65–70% success.
• Desmopressin (DDAVP): Synthetic ADH; reduces nighttime urine volume. Short-term use (camps, sleepovers) or bridge to alarm.
• Treat constipation.
• Bladder training, fluid scheduling (not restriction).

Punishment or shaming worsens the problem. Supportive, structured approach works best.