{"h1":"Early Signs of Selective Mutism in a 12-to-18-Month-Old","faq":[{"a":"No. Selective Mutism depends on a child speaking freely in some settings (like home) but staying consistently silent in others (like nursery). That pattern can only be judged once expressive language is established, usually after age 2–3 and most often at pre-school entry. At 12–18 months there is nothing to diagnose.","q":"Can Selective Mutism be diagnosed in a 12–18 month-old?"},{"a":"Usually not. Many toddlers are naturally cautious or 'slow to warm up', going quiet, clinging or watching before joining in. At this age that's a normal temperament style, not Selective Mutism. If you're unsure, a gentle developmental check can reassure you.","q":"My toddler goes silent around strangers — should I worry?"},{"a":"Look for babbling with varied sounds, pointing and showing you things, following your gaze, sharing smiles and gestures like waving, understanding simple words, and a few first words emerging. These signal communication is developing well.","q":"What communication should I see at 12–18 months?"},{"a":"Consider a check if there's no babbling or gestures by around 12 months, no single words by 16–18 months, loss of words or social skills the child previously had, or little response to their name. This looks at communication broadly, not at mutism.","q":"When should I seek a developmental check?"}],"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","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":"Early Signs","value":"early_signs"},{"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":"what-are-the-early-signs-of-selective-mutism-in-a-6-to-9-month-old","title":"Early Signs of Selective Mutism in a 6-to-9-Month-Old"},{"lang":"en","slug":"what-are-the-early-signs-of-selective-mutism-in-a-9-to-12-month-old","title":"Early Signs of Selective Mutism at 9–12 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-12-to-18-month-old-might-have-selective-mutism","title":"When to Worry About Selective Mutism at 12–18 Months"},{"lang":"en","slug":"what-are-the-early-signs-of-selective-mutism-in-a-2-year-old","title":"Early Signs of Selective Mutism in a 2-Year-Old"}],"summary":"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.","answer_md":"*Your bright, watchful toddler goes quiet around new faces — at this age, is that worry, or simply who they're growing into?*\n\n## In short\nSelective 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.\n\n## What is actually meaningful to watch at 12–18 months\nRather than looking for \"mutism\", this is the age to gently observe whether communication is *developing*:\n\n**Early communication that's coming along well**\n- Babbling with varied sounds, and turning towards your voice and name\n- Pointing, reaching, showing you things, and following your gaze\n- Sharing smiles, eye contact and back-and-forth gestures (waving, clapping)\n- A few first words emerging, with steady understanding of simple words\n\n**Temperament, not a disorder**\n- 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.\n\n**Worth a gentle developmental check (about communication broadly, not mutism)**\n- No babbling, gestures or pointing by around 12 months\n- No single words by around 16–18 months\n- Loss of words or social skills the child previously had\n- Little response to their name or to familiar voices\n\n## When does Selective Mutism become meaningful?\nThe 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.\n\n## The Pinnacle way\nAt [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.\n\n## Trusted sources\nAligned 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.\n\n**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.\n\nThis is general information, not a diagnosis — individual assessment and diagnosis require an appropriately qualified healthcare professional.","canonical":"https://pinnacleblooms.org/ask/what-are-the-early-signs-of-selective-mutism-in-a-12-to-18-month-old","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/what-are-the-early-signs-of-selective-mutism-in-a-12-to-18-month-old","lang":"en","indexable":true},{"href":"https://pinnacleblooms.org/ask/what-are-the-early-signs-of-selective-mutism-in-a-12-to-18-month-old-te","lang":"te","indexable":true}],"dimensions":[{"key":"conditions","label":"Conditions"}],"meta_title":"Selective Mutism Signs in a 12–18 Month-Old","meta_robots":"index, follow, max-image-preview:large","everyday_tip":"Keep talk light and pressure-free: narrate your day, pause and wait, and celebrate any sound, point or gesture rather than pressing for words. Following your child's lead in play builds far more communication than asking them to 'say it'.","published_at":"2026-06-10T10:54:00.24648+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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smiles and a few first words. A gentle developmental check is wise if there's no babbling or gestures by 12 months, no words by 16–18 months, loss of earlier skills, or little response to name. Going quiet with strangers is normal toddler temperament at this age.","authority_links":[{"url":"https://icd.who.int/browse/2024-01/mms/en","code":"6B06","label":"WHO ICD-11: Selective mutism (6B06)"},{"url":"https://www.healthychildren.org/English/ages-stages/toddler/Pages/default.aspx","label":"HealthyChildren.org: Toddler communication milestones"},{"url":"https://www.cdc.gov/child-development","label":"CDC: Developmental milestones (Learn the Signs. Act Early.)"}],"last_reviewed_at":"2026-06-10T10:54:00.24648+00:00","meta_description":"Selective Mutism isn't diagnosed in a 12–18 month-old. Learn what communication to watch at this age, when the condition becomes meaningful, and when to se","related_materials":[],"related_techniques":[]}