Toilet training and elimination behaviour — branching viva

Stem

You are in clinic with a 7-year-old and parents. They report frequent night wetting, stained underwear and large hard stools. They want to punish wet nights and ask for a tablet before camp. [1] [11]

Examiner: How do you open this consultation? [1]

Strong answer: Without blame. Name that wetting and soiling are common and usually involuntary. Stop punishment first, then assess phenotype, constipation and red flags. [1] [13]

Examiner: Classify the likely continence phenotype. [2] [3]

Strong answer: Primary nocturnal enuresis — if no significant daytime LUTS this is MNE by ICCS language — plus retentive encopresis with constipation and overflow. Age thresholds are met (enuresis ≥5, encopresis ≥4). [2] [3] [11]

Examiner: What is the enuresis triad? [13]

Strong answer: Nocturnal polyuria, reduced nocturnal bladder capacity or overactivity, and impaired arousal from sleep. Children load differently on these factors. [2] [13]

Examiner: Why treat the bowel before or with the bedwetting plan? [9]

Strong answer: Rectal loading drives overflow soiling and can compress the bladder (bowel–bladder axis). Clearing constipation often improves urinary symptoms and treatment adherence. [9] [11]

Examiner: Alarm versus desmopressin — when each? [4] [5] [6]

Strong answer: Alarm for durable cure when family is ready. Desmopressin for short-term dryness (camp/sleepover) or when alarm is unsuitable, failed or refused. Desmopressin usually works only while taken. [4] [5] [6]

Examiner: Safety counselling if desmopressin is used for camp? [6] [14]

Strong answer: Evening free-water restriction; stop during vomiting or diarrhoea; warn about headache, vomiting and hyponatraemic seizures; verify product information for dose. [6] [14]

Examiner: Name three red flags that change the pathway today. [1] [2]

Strong answer: Secondary onset with polyuria/polydipsia; continuous daytime wetting; neurological or spinal signs; coercive toileting needing safeguarding. [1] [2]

Examiner: Close with disposition. [1] [4] [9]

Strong answer: Non-punitive bowel programme now; alarm pathway for cure; camp desmopressin if appropriate; review; escalate to continence/urology/GI/mental health if red flags, resistance or high psychosocial risk. [1] [4] [9]