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Enuresis and encopresis matter because they name involuntary voiding, of urine and stool respectively, past the age it is normally expected, and treatment depends heavily on whether an organic cause has been excluded first. Enuresis is involuntary or intentional voiding of urine, and encopresis is passage of stool, into inappropriate places, in a child old enough that continence would normally be expected, typically age five for enuresis and four for encopresis. For example, imagine a six-year-old who still wets the bed most nights despite normal toilet training, with no structural or neurological problem found on examination. In practice, ruling out an organic cause, such as a urinary tract infection or spina bifida, comes before labelling this a primary behavioural condition.

Both conditions are classified as primary, continence was never achieved, or secondary, continence was achieved for at least a period before symptoms returned, often triggered by a stressor such as starting school or a new sibling. Organic causes, urinary tract infection, diabetes mellitus, constipation with overflow soiling, or a neurological problem, must be excluded before diagnosing either as a primary behavioural condition. Take a previously dry seven-year-old who develops new bedwetting shortly after his parents' separation: this secondary enuresis warrants a search for a trigger alongside routine organic screening. In practice, an enuresis alarm, which wakes the child at the first sign of wetting, and desmopressin, a medication that reduces urine production overnight, are standard treatment options once organic causes are excluded.

• Below which age is bedwetting generally considered developmentally normal rather than a disorder?
• What must be done first for a child with overflow soiling from chronic constipation?
• Which advice is essential when a child takes desmopressin for bedwetting?

• Organic causes (urinary tract infection, constipation, diabetes mellitus, neurological disease): must be excluded first, unlike primary behavioural enuresis or encopresis, which is a diagnosis of exclusion.
• Secondary enuresis or encopresis, continence was previously achieved and then lost, unlike primary enuresis or encopresis, where continence was never established.
• Constipation with overflow soiling, an organic mimic of encopresis, rather than true behavioural encopresis without any underlying bowel pathology.
• Enuresis, managed with an alarm or desmopressin, unlike encopresis, which typically requires treating underlying constipation first.

• Most two-year-olds are not yet reliably dry at night.
• An enuresis alarm treats bedwetting rather than soiling.
• Nine years is well above the threshold, and wetting at that age warrants assessment.
• Twelve years is far beyond the developmental norm.
• Persistence to fifteen years is uncommon and needs assessment.

• Extract the defining phenomenology, duration, severity and functional-impact clues.
• Match the pattern to the most specific diagnostic or assessment construct.
• Actively test the closest look-alike against the missing or contradictory clue.
• Choose the precise term rather than a broader category that is merely compatible.