# Early Signs of Selective Mutism in a 12-to-18-Month-Old

Canonical: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-selective-mutism-in-a-12-to-18-month-old
Publisher: Pinnacle Blooms Network / Bharath Healthcare Laboratories Private Limited

Selective Mutism cannot be identified in a 12-to-18-month-old, because reliable speech in some settings but not others — the core of the condition — only becomes clear after expressive language is established, usually from age 3 around pre-school entry. At this age, observe broad communication (babbling, gestures, pointing, first words) rather than mutism, and treat shyness with strangers as normal temperament. A general developmental check is the right step if communication seems delayed.

*Your bright, watchful toddler goes quiet around new faces — at this age, is that worry, or simply who they're growing into?*

## In short
Selective Mutism is a recognised anxiety-related condition — but it is not diagnosed in a 12-to-18-month-old, because reliable speech and social communication are still emerging at this age. A diagnosis depends on a child being consistently able to speak in some settings (such as home) yet consistently silent in others (such as nursery), and that pattern can only be judged once expressive language is established, usually after age 2–3 and most often once a child starts pre-school. In the meantime, the kindest step is to nurture warm, low-pressure communication and have a general developmental check if anything feels off.

## What is actually meaningful to watch at 12–18 months
Rather than looking for "mutism", this is the age to gently observe whether communication is *developing*:

**Early communication that's coming along well**
- Babbling with varied sounds, and turning towards your voice and name
- Pointing, reaching, showing you things, and following your gaze
- Sharing smiles, eye contact and back-and-forth gestures (waving, clapping)
- A few first words emerging, with steady understanding of simple words

**Temperament, not a disorder**
- Some toddlers are naturally cautious or "slow to warm up" with strangers — going quiet, clinging or watching before joining in. At this age this is a normal temperament style, not Selective Mutism.

**Worth a gentle developmental check (about communication broadly, not mutism)**
- No babbling, gestures or pointing by around 12 months
- No single words by around 16–18 months
- Loss of words or social skills the child previously had
- Little response to their name or to familiar voices

## When does Selective Mutism become meaningful?
The pattern typically becomes recognisable once a child is speaking freely at home but consistently silent in specific social settings — usually noticed at pre-school or nursery entry, often between ages 3 and 5. The silence lasts at least about a month (beyond the normal first month of settling in) and isn't explained by unfamiliarity with the language. So at 12–18 months, there is nothing to label and nothing to fear — only communication to support.

## The Pinnacle way
At [Pinnacle Blooms Network](/), we meet your toddler where they are — building joyful, pressure-free back-and-forth communication and reassuring you about what's typical. If a child is later shown to speak at home but freeze elsewhere, gentle [speech therapy](https://www.pinnacleblooms.org/top-speech-therapy-center-india-proven-improvement-rate) and confidence-building support can help; for now, a broad developmental screen is the right starting point. Learn more about [Selective Mutism](/selective-mutism) and our clinician-led [AbilityScore®](/ask/what-is-the-abilityscore-and-how-is-it-calculated). Developmental measurement supports care planning; diagnosis requires an appropriately qualified healthcare professional. under qualified clinician care — nothing here is a diagnosis. Across 70+ centres in 4 states and 4.95 lakh+ families served, our approach is reassurance first, strengths always.

## Trusted sources
Aligned with WHO ICD-11 (6B06 Selective mutism), which frames it as a consistent failure to speak in specific social situations despite speaking elsewhere, and with American Academy of Pediatrics and HealthyChildren.org guidance on early communication milestones and toddler temperament.

**Next step —** if you'd simply like to know your toddler's communication is on track, book a friendly developmental screen with our team on WhatsApp at +91 91001 81181, and let's look together — no labels, just clarity.

This is general information, not a diagnosis — individual assessment and diagnosis require an appropriately qualified healthcare professional.

## Sources
- WHO ICD-11: Selective mutism (6B06): https://icd.who.int/browse/2024-01/mms/en
- HealthyChildren.org: Toddler communication milestones: https://www.healthychildren.org/English/ages-stages/toddler/Pages/default.aspx
- CDC: Developmental milestones (Learn the Signs. Act Early.): https://www.cdc.gov/child-development

## Connected topics and perspectives
- Conditions: https://pinnacleblooms.org/ask/conditions
- Parent: https://pinnacleblooms.org/ask/lens/stakeholder/parent
- Toddler-12-18: https://pinnacleblooms.org/ask/lens/age/toddler-12-18
- Emotional: https://pinnacleblooms.org/ask/lens/domain/emotional
- Early Signs: https://pinnacleblooms.org/ask/lens/intent/early_signs
- Screen: https://pinnacleblooms.org/ask/lens/lifecycle/screen
- Special Education: https://pinnacleblooms.org/ask/lens/route/special-education
- Early Clarity: https://pinnacleblooms.org/ask/lens/empowerment/early_clarity

## Related question paths

### Understand the subject
- How Selective Mutism Affects a Child's Daily Life: https://pinnacleblooms.org/ask/how-does-selective-mutism-affect-a-child-s-daily-life
- Is Selective Mutism considered a disability?: https://pinnacleblooms.org/ask/is-selective-mutism-considered-a-disability
- Is Selective Mutism Genetic or Hereditary?: https://pinnacleblooms.org/ask/is-selective-mutism-genetic-or-hereditary
- What are common myths about Selective Mutism?: https://pinnacleblooms.org/ask/what-are-common-myths-about-selective-mutism
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- What Causes Selective Mutism in Children?: https://pinnacleblooms.org/ask/what-causes-selective-mutism-in-children
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- Early Intervention Outcomes for Selective Mutism Under 7: https://pinnacleblooms.org/ask/what-does-current-research-show-about-early-intervention-outcomes-for-selective-mutism-in-children-under-7
- What is Selective Mutism, and what are its ICD-11 features in early childhood?: https://pinnacleblooms.org/ask/what-is-selective-mutism-and-what-are-its-icd-11-features-in-early-childhood
- What is the ICD-11 classification for Selective Mutism?: https://pinnacleblooms.org/ask/what-is-the-icd-11-classification-for-selective-mutism

### Recognise signs & concerns
- Early signs of Selective Mutism in an 18–24-month-old: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-selective-mutism-in-a-18-to-24-month-old
- When to Worry About Selective Mutism at 12–18 Months: https://pinnacleblooms.org/ask/when-should-i-worry-that-my-12-to-18-month-old-might-have-selective-mutism
- When should I worry that my 18-to-24-month-old might have Selective Mutism?: https://pinnacleblooms.org/ask/when-should-i-worry-that-my-18-to-24-month-old-might-have-selective-mutism
- Early Signs of Selective Mutism in a 2-Year-Old: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-selective-mutism-in-a-2-year-old
- Early Signs of Selective Mutism at 9–12 Months: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-selective-mutism-in-a-9-to-12-month-old
- Early Signs of Selective Mutism in a 6-to-9-Month-Old: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-selective-mutism-in-a-6-to-9-month-old
- Can Selective Mutism Be Cured?: https://pinnacleblooms.org/ask/can-selective-mutism-be-cured
- Can Selective Mutism Be Prevented?: https://pinnacleblooms.org/ask/can-selective-mutism-be-prevented
- Do Boys Show Selective Mutism Differently?: https://pinnacleblooms.org/ask/do-boys-show-selective-mutism-differently
- Selective Mutism in Girls: https://pinnacleblooms.org/ask/do-girls-show-selective-mutism-differently
- Should I be worried my child might have Selective Mutism?: https://pinnacleblooms.org/ask/should-i-be-worried-my-child-might-have-selective-mutism
- Early Signs of Selective Mutism: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-selective-mutism

### Explore causes & influences
- Are boys more likely to have selective mutism?: https://pinnacleblooms.org/ask/are-boys-more-likely-to-have-selective-mutism
- Are girls more likely to have Selective Mutism?: https://pinnacleblooms.org/ask/are-girls-more-likely-to-have-selective-mutism
- What Causes Selective Mutism in Young Children?: https://pinnacleblooms.org/ask/what-causes-selective-mutism-in-young-children
- Early Intervention for Selective Mutism: Advancing UNCRPD and the SDGs: https://pinnacleblooms.org/ask/how-does-early-intervention-for-selective-mutism-advance-un-child-rights-uncrpd-and-the-sdgs
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- Cost-effectiveness of early therapy for Selective Mutism: https://pinnacleblooms.org/ask/what-is-the-cost-effectiveness-of-early-therapy-for-selective-mutism-in-young-children
- What is the prevalence and public-health burden of Selective Mutism among young children in India?: https://pinnacleblooms.org/ask/what-is-the-prevalence-and-public-health-burden-of-selective-mutism-among-young-children-in-india

### Understand assessment
- How AbilityScore Tracks Progress in Selective Mutism: https://pinnacleblooms.org/ask/how-does-abilityscore-track-progress-in-a-child-with-selective-mutism
- How Selective Mutism Is Assessed in a Young Child: https://pinnacleblooms.org/ask/how-is-selective-mutism-assessed-in-a-young-child
- How Is Selective Mutism Assessed in Children Under 7?: https://pinnacleblooms.org/ask/how-is-selective-mutism-assessed-in-children-under-7
- What an AbilityScore of 0–100 Means for a Child with Selective Mutism: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-0-100-mean-for-a-child-with-selective-mutism
- AbilityScore® 100–200 in Selective Mutism: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-100-200-mean-for-a-child-with-selective-mutism
- What does an AbilityScore of 200–300 mean for a child with Selective Mutism?: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-200-300-mean-for-a-child-with-selective-mutism
- What an AbilityScore of 300–400 Means in Selective Mutism: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-300-400-mean-for-a-child-with-selective-mutism
- What an AbilityScore® of 400–500 means in Selective Mutism: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-400-500-mean-for-a-child-with-selective-mutism
- What an AbilityScore of 500–600 means for Selective Mutism: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-500-600-mean-for-a-child-with-selective-mutism
- What does an AbilityScore of 600-700 mean for a child with Selective Mutism?: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-600-700-mean-for-a-child-with-selective-mutism
- What does an AbilityScore of 700–800 mean for a child with Selective Mutism?: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-700-800-mean-for-a-child-with-selective-mutism
- What does an AbilityScore of 800–900 mean for a child with Selective Mutism?: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-800-900-mean-for-a-child-with-selective-mutism

### Explore therapy & support
- Can a child with Selective Mutism attend a mainstream school?: https://pinnacleblooms.org/ask/can-a-child-with-selective-mutism-attend-a-mainstream-school
- Can a Child with Selective Mutism Attend a Regular School?: https://pinnacleblooms.org/ask/can-a-child-with-selective-mutism-attend-a-regular-school
- Can a Child with Selective Mutism Grow Up to Live Independently?: https://pinnacleblooms.org/ask/can-a-child-with-selective-mutism-grow-up-to-live-independently
- How can we support emotional development in a child with Selective Mutism?: https://pinnacleblooms.org/ask/how-can-we-support-emotional-development-in-a-child-with-selective-mutism
- How Is Selective Mutism Diagnosed in a Child?: https://pinnacleblooms.org/ask/how-is-selective-mutism-diagnosed-in-a-child
- How Therapy Supports a Child with Selective Mutism: https://pinnacleblooms.org/ask/how-is-selective-mutism-supported-through-therapy
- Selective Mutism AbilityScore — what to do next: https://pinnacleblooms.org/ask/my-child-with-selective-mutism-has-an-abilityscore-of-0-100-what-should-we-do-next
- Selective Mutism: AbilityScore 100–200 — What To Do Next: https://pinnacleblooms.org/ask/my-child-with-selective-mutism-has-an-abilityscore-of-100-200-what-should-we-do-next
- Selective Mutism AbilityScore 200–300: Next Steps for Parents: https://pinnacleblooms.org/ask/my-child-with-selective-mutism-has-an-abilityscore-of-200-300-what-should-we-do-next
- Selective Mutism: AbilityScore 300–400 Next Steps: https://pinnacleblooms.org/ask/my-child-with-selective-mutism-has-an-abilityscore-of-300-400-what-should-we-do-next
- Selective Mutism with an AbilityScore of 400–500: what to do next: https://pinnacleblooms.org/ask/my-child-with-selective-mutism-has-an-abilityscore-of-400-500-what-should-we-do-next
- Selective Mutism AbilityScore 500–600: Next Steps: https://pinnacleblooms.org/ask/my-child-with-selective-mutism-has-an-abilityscore-of-500-600-what-should-we-do-next

### At home & in everyday life
- How can I support my child with Selective Mutism at home?: https://pinnacleblooms.org/ask/how-can-i-support-my-child-with-selective-mutism-at-home