{"h1":"Selective Mutism at 12–18 Months: When to Worry","faq":[{"a":"No. Selective Mutism describes a child who can speak comfortably in some settings but consistently does not in others. This pattern only becomes recognisable once a child has reliable spoken language and regular social exposure, usually from around age 3. At 12–18 months, quietness around new people is normal caution, not a disorder.","q":"Can a 1-year-old have Selective Mutism?"},{"a":"Being shy, clingy or watchful with unfamiliar people is completely typical at this age. It reflects healthy wariness as your child learns who is safe. What matters now is whether they communicate warmly with familiar people through sounds, gestures and emerging words.","q":"My toddler is quiet around strangers — is that a warning sign?"},{"a":"Consider a general developmental check if, by around 18 months, your child is not babbling, not gesturing (no pointing or waving), not responding to their name, has no words, or has lost skills they once had. This points to early speech-language support, not Selective Mutism.","q":"When should I seek help about my toddler's communication?"}],"lang":"en","slug":"when-should-i-worry-that-my-12-to-18-month-old-might-have-selective-mutism","title":"When to Worry About Selective Mutism at 12–18 Months","entity":{"key":"selective-mutism","kind":"condition","name":"Selective Mutism","slug":"selective-mutism"},"lenses":[{"kind":"stakeholder","label":"Parent","value":"parent"},{"kind":"age","label":"Toddler-12-18","value":"toddler-12-18"},{"kind":"domain","label":"Emotional","value":"emotional"},{"kind":"intent","label":"Concern","value":"concern"},{"kind":"lifecycle","label":"Screen","value":"screen"},{"kind":"route","label":"Special-Education","value":"special-education"},{"kind":"empowerment","label":"Early Clarity","value":"early_clarity"}],"parent":{"key":"conditions","label":"Conditions"},"related":[{"lang":"en","slug":"when-should-i-worry-that-my-6-to-9-month-old-might-have-selective-mutism","title":"When should I worry about Selective Mutism at 6–9 months?"},{"lang":"en","slug":"when-should-i-worry-that-my-3-to-6-month-old-might-have-selective-mutism","title":"When to Worry About Selective Mutism at 3–6 Months"},{"lang":"en","slug":"when-should-i-worry-that-my-18-to-24-month-old-might-have-selective-mutism","title":"When should I worry that my 18-to-24-month-old might have Selective Mutism?"},{"lang":"en","slug":"what-are-the-early-signs-of-selective-mutism-in-a-18-to-24-month-old","title":"Early signs of Selective Mutism in an 18–24-month-old"},{"lang":"en","slug":"when-should-i-worry-that-my-9-to-12-month-old-might-have-selective-mutism","title":"When to Worry About Selective Mutism at 9–12 Months"},{"lang":"en","slug":"what-are-the-early-signs-of-selective-mutism-in-a-12-to-18-month-old","title":"Early Signs of Selective Mutism in a 12-to-18-Month-Old"}],"summary":"Selective Mutism is not assessed in a 12-to-18-month-old. It describes a child who speaks freely in some settings but consistently not in others — a pattern recognisable only once a child has reliable speech and regular social exposure, usually from around age 3. At this age, quietness with strangers is normal caution. Watch communication building blocks — babbling, gestures, first words, responding to name — and seek a general check if these are absent by 18 months. Only a Pinnacle clinician can assess, never an online form.","answer_md":"*If your toddler babbles happily at home but goes quiet around others, you may be wondering whether this is the start of Selective Mutism — and the honest answer brings real reassurance.*\n\n## In short\nSelective Mutism is not something we look for, or worry about, in a 12-to-18-month-old. It is a condition where a child who *can* speak comfortably in some settings (usually home) consistently does *not* speak in specific social situations (such as nursery or with unfamiliar people) — and that pattern can only be recognised once a child has reliable spoken language *and* spends regular time in social settings where speech is expected, typically from around 3 years onward. At 12–18 months your little one is still building first words, and quietness around strangers is normal, healthy caution. What matters at this age is steady communication progress, not silence in particular places.\n\n## What is actually worth watching at 12–18 months\nRather than mutism, this age is about the early building blocks of communication. Reassuring signs to look for:\n\n- **Babbling and jargon** — strings of sounds with the rhythm of talking\n- **First words** emerging (often around 12 months, give or take)\n- **Pointing, waving, showing** — sharing attention with you\n- **Responding to their name** and simple words like \"no\" or \"bye\"\n- **Understanding more than they say** — following \"give me the ball\"\n- **Warming up** to familiar people, even if shy with new ones at first\n\nBeing quiet, clingy or watchful with strangers is completely typical now — it is wariness, not a disorder. Selective Mutism (ICD-11 6B06) is recognised much later, when a child clearly speaks freely in one setting yet not in another over time.\n\n## When a check makes sense\nA general developmental check is wise — not for mutism, but for communication — if by around 18 months your child is **not babbling, not gesturing, not responding to their name, has no words at all, or has lost skills they once had.** These point to early speech-language support, which is highly effective when started gently and early. The question of Selective Mutism becomes meaningful only nearer 3 years, if a talking child stays consistently silent in particular places for a month or more.\n\n## The Pinnacle way\nA 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 therapists look at your child's whole communication story — sounds, gestures, understanding and connection — and reassure where reassurance is due. If early support is helpful, gentle [speech therapy](https://www.pinnacleblooms.org/top-speech-therapy-center-india-proven-improvement-rate) builds confident communicators, and you can read more about [Selective Mutism](/selective-mutism) as your child grows.\n\n## Trusted sources\nWHO ICD-11 (6B06, Selective Mutism); American Speech-Language-Hearing Association on early communication milestones (asha.org); CDC developmental milestones for toddlers (cdc.gov).\n\n**Next step —** If you simply want peace of mind about how your toddler is communicating, that is reason enough. [Book a developmental check](https://www.pinnacleblooms.org/enroll-autism-speech-aba-therapies-india) with a Pinnacle speech-language therapist.\n\nThis is general information, not a diagnosis — individual assessment and diagnosis require an appropriately qualified healthcare professional.","canonical":"https://pinnacleblooms.org/ask/when-should-i-worry-that-my-12-to-18-month-old-might-have-selective-mutism","editorial":{"reviewed_at":"2026-06-11T20:12:18.613642+00:00","reviewed_by":null,"developed_by":"SETU Consortium · Pinnacle Blooms Network"},"alternates":[{"href":"https://pinnacleblooms.org/ask/when-should-i-worry-that-my-12-to-18-month-old-might-have-selective-mutism","lang":"en","indexable":true},{"href":"https://pinnacleblooms.org/ask/when-should-i-worry-that-my-12-to-18-month-old-might-have-selective-mutism-te","lang":"te","indexable":true}],"dimensions":[{"key":"conditions","label":"Conditions"}],"meta_title":"Selective Mutism in Toddlers 12–18 Months","meta_robots":"index, follow, max-image-preview:large","everyday_tip":"Narrate your day in short, warm sentences and pause to give your toddler a turn — \"You found the spoon! What's this?\" Following their gaze, naming what they point to, and celebrating every sound builds confident communication far more than pressure to perform.","published_at":"2026-06-10T10:58:00.048774+00:00","reading_paths":[{"key":"understand","items":[{"lang":"en","slug":"how-does-selective-mutism-affect-a-child-s-daily-life","title":"How Selective Mutism Affects a Child's Daily Life","reason":"Same topic"},{"lang":"en","slug":"is-selective-mutism-considered-a-disability","title":"Is Selective Mutism considered a disability?","reason":"Same topic"},{"lang":"en","slug":"is-selective-mutism-genetic-or-hereditary","title":"Is Selective Mutism Genetic or Hereditary?","reason":"Same topic"},{"lang":"en","slug":"what-are-common-myths-about-selective-mutism","title":"What are common myths about Selective Mutism?","reason":"Same topic"},{"lang":"en","slug":"what-are-the-types-or-levels-of-selective-mutism","title":"What are the types or levels of Selective Mutism?","reason":"Same 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first words, pointing and waving, responding to their name, and understanding simple instructions. Quietness with strangers is normal caution. Seek a general check if by 18 months there is no babbling, no gestures, no words, no response to name, or any loss of skills.","authority_links":[{"url":"https://icd.who.int/","code":"6B06","label":"WHO ICD-11: Selective Mutism"},{"url":"https://www.asha.org/","label":"ASHA: early communication milestones"},{"url":"https://www.cdc.gov/","label":"CDC: toddler developmental milestones"}],"last_reviewed_at":"2026-06-10T10:58:00.048774+00:00","meta_description":"Selective Mutism isn't assessed before age 3. At 12–18 months, watch communication milestones — babbling, gestures, first words — not silence. Calm guidanc","related_materials":[],"related_techniques":[]}