{"h1":"Worrying about Conduct Disorder in an 18-24 month old","faq":[{"a":"No. Conduct-Dissocial Disorder (ICD-11 6C91) describes a sustained, deliberate pattern of violating others' rights and major rules — a concept that requires impulse control and intent a toddler has not yet developed. It is recognised in older children and adolescents, never diagnosed at 18-24 months.","q":"Can a 2-year-old be diagnosed with Conduct-Dissocial Disorder?"},{"a":"Yes — entirely normal at this age. With limited words and an immature impulse-control system, hitting, biting and tantrums are how a toddler communicates overwhelming feelings. They typically fade as language and self-regulation grow, especially with calm, consistent support.","q":"Is it normal for my toddler to hit, bite and have huge tantrums?"},{"a":"Consider a gentle developmental check if big behaviours come with delayed speech, little eye contact, no pointing or sharing, or if your child is very hard to soothe and reconnect with after upsets. This supports communication and emotional skills early — not because of any 'conduct' concern.","q":"When should I actually seek help for my toddler's behaviour?"}],"lang":"en","slug":"when-should-i-worry-that-my-18-to-24-month-old-might-have-conduct-dissocial-disorder","title":"When should I worry about Conduct Disorder in my 18-24 month old?","entity":{"key":"conduct-dissocial","kind":"condition","name":"Conduct-Dissocial Disorder","slug":"conduct-dissocial-disorder"},"lenses":[{"kind":"stakeholder","label":"Parent","value":"parent"},{"kind":"age","label":"Toddler-18-24","value":"toddler-18-24"},{"kind":"domain","label":"Social","value":"social"},{"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":"what-are-the-early-signs-of-conduct-dissocial-disorder-in-a-2-year-old","title":"Early Signs of Conduct-Dissocial Disorder in a 2-Year-Old"},{"lang":"en","slug":"what-are-the-early-signs-of-conduct-dissocial-disorder-in-a-12-to-18-month-old","title":"Conduct-Dissocial Disorder at 12–18 Months: What's Really Normal"},{"lang":"en","slug":"what-are-the-early-signs-of-conduct-dissocial-disorder-in-a-18-to-24-month-old","title":"Early Signs of Conduct-Dissocial Disorder in a Toddler (18–24 Months)"},{"lang":"en","slug":"when-should-i-worry-that-my-12-to-18-month-old-might-have-conduct-dissocial-disorder","title":"When to worry about Conduct-Dissocial Disorder at 12–18 months"},{"lang":"en","slug":"when-should-i-worry-that-my-2-year-old-might-have-conduct-dissocial-disorder","title":"Conduct-Dissocial Disorder at age 2: what to know"},{"lang":"en","slug":"when-should-i-worry-that-my-9-to-12-month-old-might-have-conduct-dissocial-disorder","title":"When to Worry About Conduct Disorder in a 9–12-Month-Old"}],"summary":"Conduct-Dissocial Disorder (ICD-11 6C91) is not a meaningful concern at 18-24 months — it describes a sustained, deliberate pattern of rule-violation recognised in older children and adolescents. Toddler hitting, biting, defiance and tantrums are normal developmental behaviour. Watch communication, connection and the ability to be soothed instead; a general developmental check supports those skills. Only a Pinnacle clinician can assess, never an online form.","answer_md":"*If your toddler is hitting, biting, melting down or defying you a dozen times a day, and someone has whispered the words \"conduct disorder\" — please take a breath. This is one worry you can set down.*\n\n## In short\nYou should **not** be assessing an 18-to-24-month-old for [Conduct-Dissocial Disorder](/conduct-dissocial-disorder). This is a diagnosis (ICD-11 6C91) built around a sustained pattern of *deliberately* violating the rights of others and major age-appropriate rules — a concept that simply does not apply to a toddler whose brain has not yet developed the impulse control, empathy or language to mean such a thing. Defiance, hitting, biting, throwing and enormous tantrums at this age are **normal, expected developmental behaviour**, not signs of a conduct disorder. There is nothing to diagnose here — only a small child to support.\n\n## Why this label doesn't fit a toddler\nBetween 18 and 24 months your child is in the thick of the \"no!\" stage — big feelings, tiny vocabulary, and almost no brakes. The part of the brain that manages impulses and patience (the prefrontal cortex) is years away from maturity. So what looks like \"bad behaviour\" is really an under-developed skill:\n\n- **Hitting, biting, pushing** — communication when words run out, not malice\n- **Huge tantrums** — a flooded nervous system, not defiance for its own sake\n- **Saying \"no\" and resisting** — healthy emerging autonomy\n- **Grabbing, not sharing** — completely age-typical; sharing is a skill learned much later\n\nConduct-Dissocial Disorder is recognised in older children and adolescents, and even then only when a pattern is **persistent, repetitive and clearly beyond the ordinary** across settings and over time. None of that framework is meaningful for a two-year-old.\n\n## What is worth watching at this age\nRather than scanning for a disorder, gently watch the building blocks of communication and connection — these tell you far more:\n\n- Is your child **using or trying words/gestures** to ask for things?\n- Do they **share attention** — pointing, showing you toys, looking to you?\n- Do they **respond to their name** and follow simple instructions?\n- After a meltdown, can they be **soothed and reconnect** with you?\n\nIf big behaviours come with delayed speech, little eye contact, no pointing or sharing, or your child seems very hard to settle, a **general developmental check** is a kind, sensible step — not because of \"conduct\", but to support communication and emotional regulation early.\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, a checklist, or a worried late-night search. Our team looks at your child's whole story — communication, play, emotional regulation and the world around them — and supports skills with warmth, never labels. Gentle [child psychology and behaviour support](/child-psychology) and, where speech is emerging slowly, [speech therapy](https://www.pinnacleblooms.org/top-speech-therapy-center-india-proven-improvement-rate), help toddlers find calmer ways to express those big feelings.\n\n## Trusted sources\nWHO ICD-11 (6C91, Conduct-Dissocial Disorder — defined for sustained patterns in older children and adolescents); American Academy of Pediatrics guidance on typical toddler behaviour and tantrums (healthychildren.org); WHO Nurturing Care Framework on early relational support.\n\n**Next step —** If big behaviours are wearing you down, you don't need a diagnosis to get help. [Book a calm developmental check](https://www.pinnacleblooms.org/enroll-autism-speech-aba-therapies-india) and we'll support your toddler's communication and emotions together.\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-18-to-24-month-old-might-have-conduct-dissocial-disorder","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-18-to-24-month-old-might-have-conduct-dissocial-disorder","lang":"en","indexable":true},{"href":"https://pinnacleblooms.org/ask/when-should-i-worry-that-my-18-to-24-month-old-might-have-conduct-dissocial-disorder-te","lang":"te","indexable":true}],"dimensions":[{"key":"conditions","label":"Conditions"}],"meta_title":"Conduct Disorder in Toddlers: Should You Worry?","meta_robots":"index, follow, max-image-preview:large","everyday_tip":"When the big feelings hit, name them out loud and stay close: \"You're so cross — you wanted the toy.\" Naming emotions and offering simple choices teaches your toddler the words and calm they don't yet have. Hitting and biting fade as language grows.","published_at":"2026-06-10T10:58:00.048774+00:00","reading_paths":[{"key":"understand","items":[{"lang":"en","slug":"how-does-conduct-dissocial-disorder-affect-a-child-s-daily-life","title":"How Conduct-Dissocial Disorder Affects a Child's Daily Life","reason":"Same topic"},{"lang":"en","slug":"is-conduct-dissocial-disorder-considered-a-disability","title":"Is Conduct-Dissocial Disorder Considered a Disability?","reason":"Same topic"},{"lang":"en","slug":"is-conduct-dissocial-disorder-genetic-or-hereditary","title":"Is Conduct-Dissocial Disorder Genetic or Hereditary?","reason":"Same topic"},{"lang":"en","slug":"what-are-common-myths-about-conduct-dissocial-disorder","title":"What are common myths about Conduct-Dissocial Disorder?","reason":"Same topic"},{"lang":"en","slug":"what-are-the-types-or-levels-of-conduct-dissocial-disorder","title":"Types and Levels of Conduct-Dissocial Disorder","reason":"Same 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300–400: what to do next","reason":"Same topic"},{"lang":"en","slug":"my-child-with-conduct-dissocial-disorder-has-an-abilityscore-of-400-500-what-should-we-do-next","title":"AbilityScore 400–500 with Conduct-Dissocial Disorder — next steps","reason":"Same topic"},{"lang":"en","slug":"my-child-with-conduct-dissocial-disorder-has-an-abilityscore-of-500-600-what-should-we-do-next","title":"AbilityScore 500–600 with Conduct-Dissocial Disorder: what next","reason":"Same topic"}],"label":"Explore therapy & support","total":63},{"key":"home","items":[{"lang":"en","slug":"how-can-i-support-my-child-with-conduct-dissocial-disorder-at-home","title":"How to Support a Child with Conduct-Dissocial Disorder at Home","reason":"Same topic"}],"label":"At home & in everyday life","total":1}],"what_to_watch":"Don't watch for 'conduct' signs — at this age watch the building blocks instead: is your child using words or gestures to ask for things, sharing attention by pointing or showing you toys, responding to their name, and able to be soothed and reconnect after a meltdown? Seek a gentle developmental check if big behaviours come alongside delayed speech, little eye contact, no pointing, or great difficulty settling.","authority_links":[{"url":"https://icd.who.int/","code":"6C91","label":"WHO ICD-11: Conduct-Dissocial Disorder"},{"url":"https://www.healthychildren.org/","label":"AAP HealthyChildren: toddler behaviour and tantrums"},{"url":"https://nurturing-care.org/","label":"WHO Nurturing Care Framework"}],"last_reviewed_at":"2026-06-10T10:58:00.048774+00:00","meta_description":"Conduct-Dissocial Disorder is not diagnosed in 18-24 month olds. Toddler hitting and tantrums are normal — here's what to watch and when a check helps.","related_materials":[],"related_techniques":[]}