# When to Worry About Selective Mutism at 9–12 Months

Canonical: https://pinnacleblooms.org/ask/when-should-i-worry-that-my-9-to-12-month-old-might-have-selective-mutism
Publisher: Pinnacle Blooms Network / Bharath Healthcare Laboratories Private Limited

Selective Mutism cannot be identified in a 9-to-12-month-old because it describes a child who can speak in some settings but not others — and spoken language hasn't developed yet at this age. There is nothing to worry about regarding this label now. Instead, observe healthy early communication: babbling, responding to name, gestures and warm back-and-forth. Selective Mutism is usually recognised from around age 3, often when starting nursery. Only a Pinnacle clinician can assess, never an online form.

*If your baby isn't babbling as much as you hoped, it's natural to wonder about Selective Mutism — but here is the reassuring truth about this age.*

## In short
Selective Mutism cannot meaningfully be identified in a 9-to-12-month-old — it is a label that only makes sense once a child *can* speak fluently in some settings but consistently does not in others (such as nursery or with unfamiliar people), and that pattern simply cannot exist before spoken language has developed. At your baby's age there is no language for it to be selective about. So this is not something to worry about right now. What *is* worth gently observing at 9–12 months is your baby's early communication — babbling, eye contact, responding to their name and joyful back-and-forth.

## What is actually appropriate to watch at 9–12 months
This is a wonderful window for pre-speech communication. Lovely signs of healthy development include:

- **Babbling with varied sounds** — "ba-ba", "da-da", "ma-ma" strings
- **Responding to their own name** by turning or looking
- **Sharing attention** — looking where you point, following your gaze
- **Gesturing** — waving, reaching up to be lifted, perhaps pointing
- **Warm back-and-forth** — smiling, taking turns with sounds and faces
- **Showing comfort and connection** with familiar carers

These are the true building blocks of later talking. Selective Mutism (ICD-11 6B06) is an *anxiety-based* condition recognised in children who can already speak — typically noticed around the time a child starts nursery or school, usually from age 3 onwards, not in infancy.

## When a check becomes meaningful
If, as your child grows, you notice they speak comfortably at home but fall consistently silent in specific settings (and this lasts beyond the first settling-in month), *that* is the point to seek a gentle developmental conversation. For now, the kindest step for any niggle is a general developmental check — not a Selective Mutism assessment. Do mention it sooner if your baby isn't babbling at all, has lost sounds or skills, or doesn't respond to sounds.

## The Pinnacle way
A clinical [AbilityScore®](/ask/what-is-the-abilityscore-and-how-is-it-calculated) and any diagnosis are formed only at a Pinnacle Blooms Network centre, under qualified clinician care — never from an online form or a checklist. Our team looks at your baby's whole communication picture — hearing, babbling, connection and play — and reassures or guides accordingly. If you'd like peace of mind, our [speech therapy](https://www.pinnacleblooms.org/top-speech-therapy-center-india-proven-improvement-rate) and developmental specialists can review early communication, and you can read more about [Selective Mutism](/selective-mutism) for the years ahead.

## Trusted sources
WHO ICD-11 (6B06, Selective Mutism); American Academy of Pediatrics communication milestones (healthychildren.org); CDC developmental milestone guidance for infants (cdc.gov).

**Next step —** Rather than worry about a label that doesn't fit this age, book a calm general developmental check for reassurance. [Arrange a developmental check](https://www.pinnacleblooms.org/enroll-autism-speech-aba-therapies-india) with a Pinnacle specialist.

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

## Sources
- WHO ICD-11 — Selective Mutism: https://icd.who.int/browse/2024-01/mms/en
- AAP — early communication milestones: https://www.healthychildren.org
- CDC — infant developmental milestones: https://www.cdc.gov/child-development

## Connected topics and perspectives
- Conditions: https://pinnacleblooms.org/ask/conditions
- Parent: https://pinnacleblooms.org/ask/lens/stakeholder/parent
- Infant-9-12: https://pinnacleblooms.org/ask/lens/age/infant-9-12
- Emotional: https://pinnacleblooms.org/ask/lens/domain/emotional
- Concern: https://pinnacleblooms.org/ask/lens/intent/concern
- 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
- What are the types or levels of Selective Mutism?: https://pinnacleblooms.org/ask/what-are-the-types-or-levels-of-selective-mutism
- What Causes Selective Mutism in Children?: https://pinnacleblooms.org/ask/what-causes-selective-mutism-in-children
- What is Selective Mutism?: https://pinnacleblooms.org/ask/what-is-selective-mutism
- What is Selective Mutism in Early Childhood?: https://pinnacleblooms.org/ask/what-is-selective-mutism-and-what-does-it-look-like-in-early-childhood
- What other conditions often occur alongside Selective Mutism?: https://pinnacleblooms.org/ask/what-other-conditions-often-occur-alongside-selective-mutism
- 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
- When to Worry About Social Communication at 9–12 Months: https://pinnacleblooms.org/ask/when-should-i-worry-that-my-9-to-12-month-old-might-have-social-communication-difficulties
- When to Worry About Social Communication at 6–9 Months: https://pinnacleblooms.org/ask/when-should-i-worry-that-my-6-to-9-month-old-might-have-social-communication-difficulties
- Non-Verbal Signs at 9–12 Months: https://pinnacleblooms.org/ask/when-should-i-worry-that-my-9-to-12-month-old-might-have-non-verbal-minimally-verbal-presentation
- When should I worry about speech delay at 9–12 months?: https://pinnacleblooms.org/ask/when-should-i-worry-that-my-9-to-12-month-old-might-have-speech-and-language-delay
- When to Worry About DLD at 9–12 Months: https://pinnacleblooms.org/ask/when-should-i-worry-that-my-9-to-12-month-old-might-have-developmental-language-disorder
- When to worry about Speech and Language Delay at 6-9 months: https://pinnacleblooms.org/ask/when-should-i-worry-that-my-6-to-9-month-old-might-have-speech-and-language-delay
- 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
- 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

### 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
- Contributing Factors for Selective Mutism: https://pinnacleblooms.org/ask/what-are-the-known-contributing-factors-for-selective-mutism-in-early-childhood
- 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