magnus919_agent-skills/dsm5/references/20-elimination-disorders.md

Elimination Disorders — DSM-5-TR Companion Reference

Summarized and paraphrased from DSM-5-TR (American Psychiatric Association, 2022). This file is for orientation and education; verify exact criteria wording, codes, and recording procedures against the official DSM-5-TR before any formal clinical, legal, insurance, or research use.

Chapter Overview

Elimination disorders involve the inappropriate elimination of urine or feces and are usually first diagnosed in childhood or adolescence. The chapter covers enuresis (repeated voiding of urine into inappropriate places) and encopresis (repeated passage of feces into inappropriate places), with subtypes distinguishing nocturnal from diurnal voiding for enuresis and the presence or absence of constipation with overflow incontinence for encopresis. Both disorders have minimum age requirements based on developmental age, not chronological age alone, and the behavior may be voluntary or involuntary. They typically occur separately but may co-occur. These are common pediatric problems, and the conversation around them must be gentle, non-punitive, and reassuring to families while ensuring a proper medical workup.

Disorders in this chapter

Disorder	ICD-10-CM code(s)	One-line "what it is"
Enuresis	F98.0	Repeated voiding of urine into bed or clothes (nocturnal and/or diurnal)
Encopresis	F98.1	Repeated passage of feces into inappropriate places
Other Specified Elimination Disorder	N39.498 (urinary symptoms); R15.9 (fecal symptoms)	Elimination symptoms that do not meet full criteria; clinician specifies the reason
Unspecified Elimination Disorder	R32 (urinary symptoms); R15.9 (fecal symptoms)	Elimination symptoms; reason criteria are unmet not specified

Enuresis

Core features

Repeated voiding of urine into bed or clothes, most often involuntary but occasionally intentional. The behavior must be clinically significant — either at least twice a week for at least 3 consecutive months or causing clinically significant distress or impairment — and the child must have reached the age at which continence is expected (chronological age at least 5 years, or equivalent developmental/mental age). The incontinence must not be attributable to a substance or another medical condition.

Diagnostic criteria (summarized)

• Criterion A: Repeated voiding of urine into bed or clothes, whether involuntary or intentional.
• Criterion B: The behavior is clinically significant, manifested by either a frequency of at least twice a week for at least 3 consecutive months, or the presence of clinically significant distress or impairment in social, academic (occupational), or other important areas of functioning.
• Criterion C: Chronological age is at least 5 years (or equivalent developmental level — for children with developmental delays, a mental age of at least 5 years).
• Criterion D: The behavior is not attributable to the physiological effects of a substance (e.g., a diuretic, an antipsychotic medication) or another medical condition (e.g., diabetes, spina bifida, ectopic ureter in a female, posterior urethral valves in a male, tethered cord, a seizure disorder).

Specifiers

• Nocturnal only: passage of urine only during nighttime sleep — the most common subtype, sometimes called monosymptomatic enuresis; typically occurs during the first one-third of the night.
• Diurnal only: passage of urine during waking hours, in the absence of nocturnal enuresis — sometimes called urinary incontinence. Two groups are described: "urge incontinence" (sudden urge symptoms with detrusor instability) and "voiding postponement" (consciously deferring micturition until incontinence results).
• Nocturnal and diurnal: a combination of the two, also known as nonmonosymptomatic enuresis.

Onset, prevalence, course

• Daytime incontinence: 3.2%–9.0% of children at age 7 years; 1.1%–4.2% of youth ages 11–13; 1.2%–3.0% of adolescents ages 15–17 (as printed).
• Nocturnal enuresis decreases with age: roughly 5%–10% among 5-year-olds, 3%–5% among 10-year-olds, and around 1% among individuals 15 years or older. Prevalence is similar across many countries at the national level, though local school-based surveys range widely (4%–50% across settings in Africa, South Asia, Europe, and the Caribbean, at least partly due to methodological variation).
• Two courses: "primary" enuresis (the individual has never established urinary continence; by definition begins at age 5 years) and "secondary" enuresis (develops after a period of established continence, most commonly between ages 5 and 8 but possible at any time). Comorbid mental disorder prevalence does not differ between the types.
• After age 5, the rate of spontaneous remission is 5%–10% per year; most children become continent by adolescence, but in approximately 1% of cases the disorder continues into adulthood. Diurnal enuresis is uncommon after age 9 years.
• Boys and members of socially oppressed groups may have higher prevalence (e.g., African American children in the U.S.; Turkish or Moroccan children in the Netherlands); prevalence is also higher in youth with learning disabilities or ADHD.
• Nocturnal enuresis is more common in males (almost 2:1), especially in younger ages, milder severity, and nocturnal-only cases; diurnal incontinence is more common in females and the ratio increases with age. Urinary tract infections are frequently associated with daytime wetting, especially in females.

Risk and prognostic factors

• Environmental: delayed toileting and psychosocial stress are recognized associates of bladder dysfunction.
• Genetic/physiological: nocturnal enuresis is genetically heterogeneous; heritability is shown in family, twin, and segregation analyses. Risk for childhood nocturnal enuresis is approximately 3.6 times higher in offspring of enuretic mothers and 10.1 times higher in the presence of paternal urinary incontinence. Mechanisms involve a mismatch between nocturnal urine production, bladder storage capacity, and ability to arouse from sleep; sleep quality of enuretic children is often poor. The relative risk is greater for previously enuretic fathers than previously enuretic mothers.
• Developmental delays and neuropsychiatric problems predispose to bladder dysfunction.

Differential diagnosis

• Neurogenic bladder or another medical condition: the diagnosis is not made in the presence of structural conditions (e.g., posterior urethral valve, ectopic ureter), conditions causing polyuria or urgency (e.g., untreated diabetes mellitus or diabetes insipidus), or acute urinary tract infection. It is compatible with such conditions if incontinence was regularly present before the condition developed or persists after appropriate treatment of the medical condition.
• Medication side effects: enuresis may occur with antipsychotics, diuretics, or medications inducing constipation, polyuria, or executive-function changes; it may be noted as a medication side effect rather than diagnosed in isolation, unless incontinence was present before the medication.

Comorbidity

Most children with enuresis do not have a comorbid mental disorder, but behavioral and developmental symptoms are more prevalent in children with both diurnal and nocturnal enuresis. Developmental delays (speech, language, learning, motor) occur in a portion of children; encopresis and constipation co-occur with day and night incontinence; restless legs syndrome and non-REM sleep arousal disorders (sleepwalking, sleep terrors) are associated with nocturnal enuresis, as are heavy snoring and sleep apnea (about 50% of enuretic children with proven sleep-disordered breathing become dry after adenotonsillectomy). Urinary tract infections are more common in children with daytime incontinence and nonmonosymptomatic nocturnal enuresis.

Assessment considerations

• Confirm frequency (≥2x/week for ≥3 consecutive months) or clinically significant distress/impairment, and the age threshold (≥5 years or equivalent developmental level).
• Rule out medical causes and medication effects (Criterion D); a diagnosis is compatible with a medical condition only under the conditions noted above.
• Ask about patterns: nighttime only, daytime only, or both; daytime deferral (reluctance to use the toilet due to social anxiety or preoccupation with school/play) is common; enuretic events often occur in the early afternoon on school days or after returning from school.
• Assess family impact: social restrictions (e.g., sleep-away camp), self-esteem, peer ostracism, and caregiver anger/punishment/rejection.

Conversation guide

For clinicians / practitioners

• Ask gently about bedwetting and daytime wetting frequency, and whether it is involuntary; reassure both child and parent.
• Verify age (≥5 or equivalent developmental level) and duration/frequency thresholds before diagnosing.
• Rule out medical causes (UTI, diabetes, structural or neurological conditions) and medication effects; refer for workup when indicated.
• Explain the two types (primary vs secondary) and the high rate of spontaneous remission (5%–10% per year after age 5).
• Discuss evidence-based behavioral approaches and, when appropriate, medical options with the family; never respond punitively — anger and punishment worsen self-esteem and impairment.

For patients and family members

• Bedwetting is a very common childhood problem and is not the child's fault; it is not a sign of laziness or defiance. Most children outgrow it on their own.
• It can be caused by a mismatch between how much urine the body makes at night, bladder capacity, and how deeply the child sleeps — and it runs in families.
• A doctor visit is important to rule out medical causes and to discuss treatments, including behavioral approaches and sometimes medication.
• What not to assume: wetting that happens rarely, before age 5, or only during an illness or medication may not meet criteria for this diagnosis. Only a qualified clinician can determine whether enuresis is present.

Encopresis

Core features

Repeated passage of feces into inappropriate places (e.g., clothing, floor), most often involuntary but occasionally intentional, occurring at least once a month for at least 3 months in a child of at least 4 years (or equivalent developmental level). The behavior must not be attributable to a substance or another medical condition except through a mechanism involving constipation. The most common subtype involves constipation with overflow incontinence; involuntary soiling is often related to constipation, impaction, and retention with subsequent overflow.

Diagnostic criteria (summarized)

• Criterion A: Repeated passage of feces into inappropriate places (e.g., clothing, floor), whether involuntary or intentional.
• Criterion B: At least one such event occurs each month for at least 3 months.
• Criterion C: Chronological age is at least 4 years (or equivalent developmental level — for children with developmental delays, a mental age of at least 4 years).
• Criterion D: The behavior is not attributable to the physiological effects of a substance (e.g., laxatives) or another medical condition, except through a mechanism involving constipation.

Specifiers

• With constipation and overflow incontinence: evidence of constipation on physical examination or by history. Feces are characteristically (but not invariably) poorly formed; leakage can be infrequent to continuous, during the day and at times during sleep; only part of the feces is passed during toileting; incontinence resolves after treatment of the constipation. The majority of children older than 4 years with encopresis have this subtype.
• Without constipation and overflow incontinence: no evidence of constipation on physical examination or by history. Feces are likely of normal form and consistency with intermittent soiling, sometimes deposited in a prominent location; often associated with oppositional defiant disorder or conduct disorder, or with anal masturbation. Soiling without constipation is less common than with constipation.

Onset, prevalence, course

• Encopresis affects 1%–4% of children in high-income countries; 2%–8% has been reported in some Asian countries (Iran, South Korea, Sri Lanka). Prevalence is higher among children ages 4–6 years (>4%) than among children ages 10–12 years (<2%), and higher among children with early abuse or neglect and low-income youth (as printed).
• Not diagnosed until age 4 years (chronological or equivalent developmental level). Inadequate or inconsistent toilet training and psychosocial stress (entering school, birth of a sibling) may predispose.
• Two courses: "primary" (never established fecal continence) and "secondary" (develops after established fecal continence). Encopresis can persist, with intermittent exacerbations, for years.
• In children younger than 5 years the gender ratio appears equal; among older children it is more common in boys, with ratios from 2:1 (United States) to 6:1 (in community and hospital-based studies, varying globally).

Risk and prognostic factors

• Painful defecation can lead to constipation and a cycle of withholding that makes encopresis more likely; male gender and pre-adolescent age are risk factors. Anxiety, depression, behavioral disorders, psychological stressors (bullying, poor school performance), and lower socioeconomic status are thought to contribute.
• Constipation may develop for psychological reasons (anxiety about defecating in a particular place, general anxious or oppositional patterns) leading to avoidance and excessive volitional stool retention, or from physiological predispositions (ineffectual straining, paradoxical defecation dynamics with contraction rather than relaxation of the external sphincter or pelvic floor), dietary habits (insufficient fluid intake), celiac disease, hypothyroidism, or medication side effects; anal fissure and painful defecation can complicate and further increase retention.

Differential diagnosis

• Fecal incontinence due to other medical conditions (e.g., chronic diarrhea, spina bifida, anal stenosis): these do not warrant a DSM-5 diagnosis of encopresis. A diagnosis in the presence of another medical condition is appropriate only if the mechanism involves constipation that cannot be explained by other medical conditions.
• Diagnostic testing is generally not required; the diagnosis is clinical (history and physical examination). Rectal fecal impaction on digital rectal examination, an abdominal radiograph showing fecal impaction, or colonic transit testing can support the with-constipation subtype; anorectal manometry may help in selected cases. Further evaluation is indicated for refractory symptoms or signs of an underlying medical condition.

Comorbidity

Enuresis is often present in children with encopresis, particularly in the without-constipation-and-overflow-incontinence subtype; chronic constipation with encopresis may be associated with urinary reflux in the bladder or ureters leading to chronic urinary infections, which may remit with treatment of the constipation. Oppositional defiant disorder or conduct disorder features may be present, especially when soiling is deliberate (see

24-disruptive-impulse-control-and-conduct-disorders.md).

Assessment considerations

• Confirm frequency (≥1 event per month for ≥3 months) and age (≥4 years or equivalent developmental level).
• Determine the subtype: history and physical examination for constipation (abdominal examination, digital rectal examination for impaction, history of infrequent or painful bowel movements).
• Differentiate involuntary soiling (often constipation-related) from deliberate soiling (associated with oppositional/conduct features).
• Assess the child's shame, social avoidance (camp, school), peer ostracism, and caregiver responses; encopresis is associated with significant decreases in health-related quality of life and family functioning, particularly in older children.
• Cultural note: parents in some societies may not seek services for encopresis for sociocultural reasons (e.g., religious concerns about the impurity of urine and feces in some Turkish and Moroccan families in the Netherlands).

Conversation guide

For clinicians / practitioners

• Approach with warmth and no blame; the child is usually ashamed and may avoid situations that could cause embarrassment.
• Establish the subtype early — most cases involve constipation with overflow incontinence, which is highly treatable and resolves with constipation treatment.
• Rule out medical causes (chronic diarrhea, structural conditions) and consider further workup for refractory cases.
• Address the full cycle: painful defecation, withholding, impaction, and overflow; work with the family on toilet routines, diet/fluids, and constipation management, and treat any oppositional or anxious contributors.
• Reassure parents that encopresis is common, treatable, and not a sign of bad parenting or a "bad" child.

For patients and family members

• Encopresis means a child, usually over age 4, repeatedly passes stool in inappropriate places. It is often not the child's fault — hard stool (constipation) can cause a blockage with liquid stool leaking around it, and the child may not even feel it coming.
• It is common and very treatable; treatment focuses on clearing constipation, regular toilet routines, and support — not punishment. Punishing or shaming makes it worse.
• What not to assume: soiling due to a medical condition (like chronic diarrhea or spina bifida), or rare accidents, is not encopresis. Only a qualified clinician can determine whether it meets criteria, and a medical check is part of the evaluation.

Other Specified Elimination Disorder

Core features

Presentations with symptoms characteristic of an elimination disorder that cause clinically significant distress or impairment but do not meet full criteria for enuresis or encopresis; the clinician specifies the reason (e.g., "low-frequency enuresis"). Coding: N39.498 for other specified elimination disorder with urinary symptoms; R15.9 for other specified elimination disorder with fecal symptoms.

Unspecified Elimination Disorder

Core features

Same general presentation, but the clinician chooses not to specify the reason criteria are unmet; includes presentations where there is insufficient information to make a more specific diagnosis (e.g., emergency room settings). Coding: R32 for unspecified elimination disorder with urinary symptoms; R15.9 for unspecified elimination disorder with fecal symptoms.

Cross-Cutting Notes for the Whole Chapter

• Age thresholds are developmental, not purely chronological: enuresis requires age 5 (or equivalent developmental level); encopresis requires age 4 (or equivalent).
• Both disorders may be voluntary or involuntary, and both are diagnosed only when the behavior is not attributable to a substance or another medical condition (except encopresis through a mechanism involving constipation).
• These are common pediatric problems; the conversation guide should be gentle, non-punitive, and reassuring to parents, while still ensuring a proper medical workup and treating any constipation, comorbidity (e.g., ADHD, learning disabilities, oppositional or anxious features), or family-level stress (see 10-neurodevelopmental-disorders.md).