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Screening & Diagnostic Pathway for Selective Mutism (Under 7)
In children under 7, screen Selective Mutism (ICD-11 6B06) via multi-setting parent, teacher and clinician report confirming speech is present at home but consistently absent elsewhere for over a month. Differentiate from hearing loss, primary language disorder and the normal bilingual silent period, then confirm through structured observation rather than coaxing. Diagnosis and AbilityScore® are clinician-established at a Pinnacle centre.
In this answer 4 sections
A child who speaks freely at home yet falls silent at school is not being defiant — they are caught in an anxiety-driven communication freeze, and the pathway you choose decides how quickly they find their voice.
In short
Selective Mutism (ICD-11 6B06) is a diagnosis of consistent failure to speak in specific social situations (typically school) despite speaking normally in others, persisting >1 month (beyond the first month of school), and not better explained by a communication disorder, ASD or lack of language knowledge. In under-7s, screen first via multi-setting report — parent, teacher and clinician — then confirm diagnostically through structured observation. Rule out hearing loss, expressive/receptive language disorder and bilingual silent period before labelling.
The pathway
1. Screen. Use parent and teacher questionnaires plus direct observation across at least two settings. Confirm speech is present and age-appropriate at home. Flag duration beyond one month and functional impairment (academic, social).
2. Differentiate. Audiological screen to exclude hearing loss; speech-language evaluation to distinguish a primary language disorder; consider the normal silent period in newly bilingual children (commonly up to ~6 months) before diagnosing. Screen for co-occurring social anxiety — comorbidity is high.
3. Confirm and formulate. Diagnosis rests on observation and collateral history, not on coaxing the child to speak. Map severity and contexts to guide a graded, anxiety-led intervention plan (stimulus fading, shaping, sliding-in) delivered with family and school.
The Pinnacle way
A clinical AbilityScore® — a clinician-administered structured assessment — and any diagnosis are formed only at a Pinnacle Blooms Network centre under qualified clinician care, never from an app or form. Explore Selective Mutism, our speech therapy pathway, and how the AbilityScore is calculated.
Trusted sources
WHO ICD-11 (6B06); ASHA guidance on selective mutism and differential diagnosis; AAP developmental surveillance principles.
Next step — Refer for a clinician-led developmental and speech-language assessment at your nearest Pinnacle centre.
This is general information, not a diagnosis — individual assessment and diagnosis require an appropriately qualified healthcare professional.
CONNECT THE ANSWER TO YOUR CHILD’S DAY
Something to notice. Something to discuss.
What to notice
Speech present at home but consistent failure to speak at school or with unfamiliar adults persisting beyond one month, with functional impairment and no hearing or primary language explanation.
In everyday life
Never pressure the child to speak on demand during assessment — gather collateral report from parents and teachers, and observe across settings rather than testing speech directly.
Bring your observations and questions to your child’s professional. Choose activities that suit your child’s comfort, abilities and agreed plan.
Bring your questions to a first visitQuestions families ask
How long must symptoms persist before Selective Mutism is diagnosed?
Per ICD-11 6B06, the consistent failure to speak in specific situations must persist for at least one month and not be limited to the first month of school, with clear functional impairment.
How do you differentiate Selective Mutism from a bilingual silent period?
Newly bilingual children may stay silent for several months while acquiring a new language; this is developmentally normal. Confirm the child speaks fluently in their primary language at home before considering a diagnosis.
Should the child be coaxed to speak during assessment?
No. Diagnosis relies on collateral parent and teacher report plus structured observation across settings. Pressuring the child to speak increases anxiety and is not diagnostically useful.
FOLLOW THE SOURCE
References behind this answer.
- Source referenceWHO ICD-11: Selective Mutism
- Organisation website · further readingASHA: Selective Mutism guidance
- Organisation website · further readingAAP developmental surveillance
References are supplied with this answer. An organisation homepage offers further reading; it does not establish an independent review of this page.
Content attribution: SETU Consortium · Pinnacle Blooms Network.
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