{"h1":"Early Signs of Intellectual Disability at 18-24 Months","faq":[{"a":"No. Many late talkers catch up fully, and some children have a speech-only delay with everything else on track. Intellectual disability is suspected only when delays appear across several areas together - understanding, play, problem-solving and self-help - not when speech alone is behind. A developmental check can tell the two apart.","q":"Is a late-talking toddler always a sign of intellectual disability?"},{"a":"Usually not with certainty. At this age clinicians describe broad delays as 'global developmental delay'. A formal diagnosis of disorders of intellectual development is generally confirmed later, when thinking and learning can be measured more reliably. Early signs are a reason to check and support, never a final label.","q":"Can intellectual disability be diagnosed at 18-24 months?"},{"a":"Arrange a developmental check, a hearing test and a paediatric review. Some causes are treatable, and early support builds skills fastest in the toddler years. Acting early is always better than waiting and watching.","q":"What should I do if I notice several of these signs?"}],"lang":"en","slug":"what-are-the-early-signs-of-intellectual-disability-in-a-18-to-24-month-old","title":"Early Signs of Intellectual Disability at 18-24 Months","entity":{"key":"id","kind":"condition","name":"Intellectual Disability","slug":"intellectual-disability"},"lenses":[{"kind":"stakeholder","label":"Parent / Family","value":"parent"},{"kind":"age","label":"Toddler-18-24","value":"toddler-18-24"},{"kind":"domain","label":"Cognitive","value":"cognitive"},{"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"},{"kind":"condition","label":"Intellectual Disability","value":"id"},{"kind":"icd11","label":"6A00 · Disorders of intellectual development","value":"6A00"},{"kind":"language","label":"English","value":"en"},{"kind":"sdg","label":"SDG 10: Reduced Inequalities","value":"10"},{"kind":"sdg","label":"SDG 3: Good Health and Well-being","value":"3"},{"kind":"sdg","label":"SDG 4: Quality Education","value":"4"},{"kind":"stakeholder","label":"ASHA / PHC / Frontline","value":"asha_phc"},{"kind":"stakeholder","label":"Doctor / Pediatrician","value":"doctor"},{"kind":"stakeholder","label":"Teacher / Educator","value":"teacher"}],"parent":{"key":"conditions","label":"Conditions"},"related":[{"lang":"en","slug":"what-are-the-early-signs-of-intellectual-disability-in-a-2-year-old","title":"Early Signs of Intellectual Disability in a 2-Year-Old"},{"lang":"en","slug":"what-are-the-early-signs-of-intellectual-disability-in-boys","title":"Early Signs of Intellectual Disability in Boys"},{"lang":"en","slug":"what-are-the-early-signs-of-intellectual-disability-in-a-9-to-12-month-old","title":"Early Signs of Intellectual Disability at 9–12 Months"},{"lang":"en","slug":"what-are-the-early-signs-of-intellectual-disability-in-a-12-to-18-month-old","title":"Early Signs of Intellectual Disability in a 12-to-18-Month-Old"},{"lang":"en","slug":"what-are-the-early-signs-of-intellectual-disability-in-a-1-year-old-boy","title":"Early Signs of Intellectual Disability in a 1-Year-Old Boy"},{"lang":"en","slug":"what-are-the-early-signs-of-intellectual-disability","title":"What are the early signs of Intellectual Disability?"}],"summary":"At 18-24 months, early signs of intellectual disability appear as a general delay across several areas together - few words, little pretend play, late walking, and trouble understanding simple instructions - not a single late milestone. At this age it is called global developmental delay; a formal diagnosis comes later. Early signs simply mean it is worth a gentle developmental check.","answer_md":"*Every toddler grows on their own timeline — but when several everyday milestones arrive much later than expected, a gentle, early check brings clarity and calm.*\n\n## In short\nAt 18–24 months, possible early signs of [intellectual disability](/intellectual-disability) show as a *general* delay across several areas at once — talking, understanding, play, problem-solving and self-help — rather than a wobble in just one. At this age clinicians call this **global developmental delay**; a formal diagnosis of disorders of intellectual development (ICD-11 6A00) is usually confirmed later, once thinking and learning can be measured more reliably. Early signs are simply a reason to check — never a verdict.\n\n## Signs worth a gentle look\n**Communication & understanding**\n- Few or no single words by 18 months; not joining two words by 24 months\n- Doesn't follow simple one-step instructions (\"give me the ball\")\n- Limited pointing, showing or gesturing to share interest\n\n**Play & thinking**\n- Little pretend play (feeding a doll, talking on a toy phone)\n- Difficulty with simple cause-and-effect or shape-sorter type toys\n- Less curiosity about new objects than peers of the same age\n\n**Movement & self-help**\n- Late walking, or still very unsteady at 18–24 months\n- Trouble with early self-help — holding a spoon, removing socks\n\n**Always act on:** any *loss* of skills the child once had, at any age.\n\n## The science, simply\nWhat matters most is the **whole pattern across several domains together**, and whether the gap is widening. A single late milestone with everything else on track is usually reassuring. A broad lag — especially with a family history or birth concerns — deserves a developmental check, a hearing test and a paediatric review, because some causes are treatable and early support builds skills fastest in these years.\n\n## The Pinnacle way\nDevelopmental measurement supports care planning; diagnosis requires an appropriately qualified healthcare professional., under qualified clinician care — never from a checklist or a screen alone. Explore our [special education](/special-education) pathway, understand [how the AbilityScore® is calculated](/ask/what-is-the-abilityscore-and-how-is-it-calculated), and learn more about [intellectual disability](/intellectual-disability).\n\n## Trusted sources\nAligned with WHO ICD-11 (6A00 disorders of intellectual development), the CDC's \"Learn the Signs. Act Early.\" milestone guidance, the Indian Academy of Pediatrics, and the American Academy of Pediatrics.\n\n**Next step —** book a developmental check on WhatsApp at +91 91001 81181 — early clarity means early support.\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-intellectual-disability-in-a-18-to-24-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-intellectual-disability-in-a-18-to-24-month-old","lang":"en","indexable":true},{"href":"https://pinnacleblooms.org/ask/what-are-the-early-signs-of-intellectual-disability-in-a-18-to-24-month-old-te","lang":"te","indexable":true}],"dimensions":[{"key":"conditions","label":"Conditions"}],"meta_title":"Early Signs of Intellectual Disability: 18-24 Months","meta_robots":"index, follow, max-image-preview:large","everyday_tip":"Play a simple back-and-forth game: hand your toddler a spoon to 'feed' a teddy, then ask them to copy you. Watching how they imitate, understand and play tells you far more than a single word count.","published_at":"2026-06-10T09:57:00.058158+00:00","reading_paths":[{"key":"understand","items":[{"lang":"en","slug":"how-does-intellectual-disability-affect-a-child-s-daily-life","title":"How Intellectual Disability affects a child's daily life","reason":"Same topic"},{"lang":"en","slug":"is-intellectual-disability-considered-a-disability","title":"Is Intellectual Disability considered a disability?","reason":"Same topic"},{"lang":"en","slug":"is-intellectual-disability-genetic-or-hereditary","title":"Is Intellectual Disability Genetic or Hereditary?","reason":"Same topic"},{"lang":"en","slug":"what-are-common-myths-about-intellectual-disability","title":"What are common myths about Intellectual Disability?","reason":"Same topic"},{"lang":"en","slug":"what-are-the-types-or-levels-of-intellectual-disability","title":"Levels of Intellectual Disability","reason":"Same 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Seek a same-week review for any loss of skills the child once had, at any age.","authority_links":[{"url":"https://icd.who.int/browse11","code":"6A00","label":"WHO ICD-11 6A00 - Disorders of intellectual development"},{"url":"https://www.cdc.gov/child-development","label":"CDC - Learn the Signs. Act Early."},{"url":"https://www.healthychildren.org","label":"American Academy of Pediatrics - HealthyChildren.org"}],"last_reviewed_at":"2026-06-10T09:57:00.058158+00:00","meta_description":"Possible early signs of intellectual disability in 18-24 month olds: delays across talking, play, movement and understanding together. When to seek a check","related_materials":[],"related_techniques":[]}