18 Months

Eighteen months. A year and a half.

Your child has a few words now, and a lot to say. They’re on the move, fast, even if the coordination hasn’t caught up yet. They know their name. They have opinions about your dinner choices. They’re their own little person now, with a giant will and strong preferences. And even though they act like the center of the universe, you’re still the center of theirs.

Your visit at a glance

What we’ll do

• Measure weight, length, and head circumference
• Physical exam (or as good as it gets through the toddler fear of strangers)
• M-CHAT autism screening (you complete the questions, we review the score with you)
• Development check
• Behavior and language conversation.

Vaccines today

• Last Hepatitis A vaccine
• We’ll offer flu vaccine if it’s flu season and they’re due.

Screenings

• M-CHAT
• Development
• Parental wellbeing

Bring with you: A list of words your toddler uses, any pretend play you may have noticed, top 3 questions, any specific developmental questions.

What’s happening at this age

Body

• So many booboos. Running, with frequent crashes.
• Climbing stairs holding a railing
• Throwing and kicking
• Using a spoon (with mess)
• The nap transition to one is usually complete by now
• Start showing the very earliest interest in the toilet at the end of this window, but most are still firmly, happily in diapers
• Picky eating may be at its peak

Brain

• Most toddlers are trying to say at least three words beyond “mama” and “dada.” Many have a good deal more (20 to 50 words is common). First 2-word phrases may start to appear (“more milk,” “all done,” “go bye-bye”).
• Follows a one-step direction without gestures (“give it to me”)
• Copies you doing chores like sweeping, and plays with toys in simple ways like pushing a toy car
• Early pretend play

Behavior

• Tantrums in full swing
• Aggression possible (biting, hitting, throwing)
• Autonomy push intensifies (“me do it”)
• Strong attachment to specific people
• A comfort object (lovey, blanket, stuffed animal) often firmly established

🌿 Mind / Body / Spirit, for your keiki

🌟 How do you screen for autism at this age?

Today we do the first formal autism screening, called the M-CHAT (Modified Checklist for Autism in Toddlers). It’s a 20-question parent-completed questionnaire that the AAP recommends at 18 and 24 months. You’ll answer the questions, we’ll score and review them, then we’ll talk about what the score means.

A few things to know up front. The screening is not a test your child can pass or fail. It is a tool that helps us decide whether your toddler would benefit from a closer developmental look. Most toddlers who screen positive do not end up with an autism diagnosis, though some do. Earlier referral to Hawaii Early Intervention or developmental specialists means earlier support, which changes outcomes regardless of the eventual diagnosis.

If your child screens negative today, that’s reassuring. If your child screens positive today, that’s useful information. Neither is good news or bad news. It is data we use together to keep your child’s development carefully watched.

If you’ve been worried about something specific, please bring it up. You’re the world’s foremost expert on your child, and we depend on your knowledge.

How much should my toddler be speaking at 18 months?

Between now and 24 months, most toddlers move from 20-50 words to 50-200+ words and start combining them into 2- and 3-word phrases (“more milk please,” “daddy go work”). The trajectory matters more than the number. We watch for steady growth, intentional communication, and receptive understanding. If your toddler isn’t pointing, using gestures, trying to communicate with sounds or words, or has lost words they previously had, mention it today. CHOP’s age-appropriate speech and language milestones is a good companion reference.

One important note on multilingual households (Raising parents resource from Australia): speaking multiple languages at home does not slow language development. Current research is clear that bilingual and trilingual toddlers may speak slightly later in each individual language at first but catch up by school age and have lifelong cognitive benefits. If you speak Tagalog, Ilocano, Japanese, Korean, Hawaiian, Chuukese, Marshallese, or any other language at home, keep doing it. It’s a gift.

How can I prevent accidents at home?

Your toddler can now climb on chairs, couches, tables (yes, tables), and reach things at adult-counter height. The babyproofing pass you did at 9 and 12 months covered floor and crawler-level risks. Now check higher.

• Move sharp knives and heavy pots to inaccessible storage
• Anchor furniture (dressers, bookshelves, TVs) if you haven’t yet
• Lock medicine and cleaning cabinets
• Reassess door access to unsafe areas (kitchen, garage, pools, lanai)

Falls from standing height onto hard surfaces happen, and a hard fall can cause a concussion. Know the signs: vomiting more than once, prolonged sleepiness, behavior change, unusual irritability. Call us if you have any concerns. More fromNemours on preventing falls and the CPSC childproofing checklist.

What should sleep look like at 18 months?

Most toddlers have settled into one afternoon nap by now, typically 12:30 to 2:30, lasting 1 to 2 hours. Total daily sleep need is around 11 to 14 hours, including nap. Bedtime usually shifts earlier with the one-nap rhythm, often 7 to 7:30pm.

Sleep disruptions can come with developmental leaps, illness, or transitions (such as a new caregiver, travel, sibling arrival, a move). Hold the rhythm steady through small disruptions. If sleep problems persist for more than a couple of weeks without an obvious trigger, mention them today. More on this from AAP on healthy sleep habits, and Nemours on sleep for kids.

When should I be worried about my toddler’s picky eating?

Picky eating peaks somewhere between 15 and 24 months. The vast majority of toddlers grow out of it.

Signs that warrant a closer look:

• weight loss or failure to gain
• dropping below their established growth curve
• gagging or choking on textures that should be manageable
• complete refusal of entire food groups (proteins, fruits, vegetables) for weeks
• strong negative reactions to food smells or textures that interfere with daily life
• significant family stress around mealtimes

The Division of Responsibility framework (you provide, they decide) is still the foundation. If you’re concerned, bring it up. Sometimes picky eating has a sensory or oral-motor component and benefits from feeding therapy. Hawaii Early Intervention can evaluate feeding too. More from Solid Starts on toddler selectivity vs picky eating, Solid Starts picky eating FAQ.

Milestones Check-In

CDC Milestone Tracker: 18-month milestones. Check off what your child is doing on the tracker! Check out Pathways.org as well for more developmental resources.

💗 Family / Community, for you and your ʻohana

🌟 What can we do at home to support my toddler’s language?

A few practical, evidence-based things you can do, none of which require apps or programs:

• Talk to them. A lot. Narrate the day. “I’m chopping the onion. The onion is purple inside. Now I’m putting it in the pan.” Toddlers learn language from being talked to, not from screens. Talk during diaper changes, during baths, during meals, during walks.
• Read every day, in any language you speak. 15 minutes a day is plenty. Same books on repeat are good. Repetition wires the brain.
• The melodic pattern of any song helps with prosody (the rhythm of language).
• Respond to their attempts. When they point and grunt, name what they’re pointing at. When they try a word, repeat it back correctly without correcting them. “Wawa.” “Yes, water! Here’s your water.”
• Less is more on screens. Screen time doesn’t help with language acquisition at this age, no matter how educational the content is. Real human interaction is the active ingredient.

How do I help my toddler with their tantrums and aggression?

Aggression often continues or peaks between 15 and 24 months. Biting, hitting, throwing. The strategy is the same as at 15 months and gets deeper here. Stay calm. Name what you see. Set the limit firmly without anger (“I won’t let you bite. Biting hurts.”). Add brief factual consequences if needed (remove from the situation, redirect to a safer outlet). Repeat across months. They are not yet capable of understanding the moral lesson in the moment. They are capable of learning the pattern over time. Consistency is more impactful than severity.

More resources: AAP on aggressive behavior, Toddler Tantrums 101, Toddlers and the Hitting Stage.

When is my toddler ready for potty training?

Toilet training usually happens between 18 and 30 months. Most children show readiness between 22 and 30 months.

Signs to watch for:

• staying dry for 2+ hours at a time
• regular bowel movements at predictable times
• awareness of being wet or soiled (asking to be changed, hiding to poop)
• interest in the toilet or in what others do there
• ability to follow simple instructions
• ability to pull pants up and down

No need to push before they’re ready. Pushing leads to regression and longer training overall. When the readiness signs line up, we’ll talk strategy at the 2-year or 2.5-year visit.

Your wellbeing is still part of every visit

Parent wellbeing at 18 months: the marathon middle and tantrum-era rage. The novelty of new parenthood is fully gone. Sleep is often still inconsistent or recently regressed. Tantrums are in full force. The marathon nature of toddlerhood is real, and many parents are also navigating return-to-work decisions or the full-paced version of work.

Signs worth attention: parental rage that surprises you (yelling, slamming doors, scaring yourself), accumulated sleep debt manifesting as irritability or brain fog, dread about parenting tasks you used to enjoy, harsh self-comparison to other parents, fantasies of escape, feeling like you’re failing at everything, partnership conflict over division of labor.

What helps at this stage: parental rage is a real and treatable experience and you are not alone (Carla Naumburg’s How to Stop Losing Your Sh*t with Your Kids is widely loved at this stage), therapy is appropriate even without crisis, sleep when possible, a real break from your child (a few hours alone counts), partnership conversations about who handles what, knowing the difference between burnout (responds to rest and time off) and depression (rest doesn’t touch it).

Crisis resources: 988, Hawaiʻi CARES 808-832-3100, PSI Helpline 1-800-944-4773 (supports beyond the postpartum year). You don’t have to wait for crisis to seek support.

Local Oʻahu resources 🌺

🌺 Early Head Start in Hawaiʻi via Child & Family Service

Early Head Start is one of the highest-quality early childhood programs in the country. It’s federally funded, completely free for families who qualify, and offers home visits, early learning support, parenting resources, and family services for children birth to 3. If you might qualify, the application is straightforward. If you’re not sure, please ask. Many families assume they don’t qualify but they do.

🌺 Local parent-child and toddler activities on Oʻahu

Music Together Honolulu, HSPLS toddler story times at most branches, YMCA Hawaii toddler programs, Honolulu Zoo membership (good value for toddler attention spans), Hawaiʻi Children’s Discovery Center, the playgrounds at Ala Moana Beach Park and Kapiʻolani Park. Same advice as 15 months: pick something low-stakes and consistent. Same time each week beats trying to do everything occasionally.

True at every age

Some things never stop mattering, no matter the age on this page:

• Dental care: cleanings every 6 months.
• Water safety. In Hawaiʻi it’s a year-round priority at every age.
• Sun protection, every day, even when it’s overcast.

🚨 When to call us

For a toddler 18+ months old, call us right away (or go to the ED) for any of these:

• Fever with your toddler looking unwell, lethargic, dehydrated, or not interactive. Number matters less now than how they look.
• After today’s vaccines (if given): fever ≥104°F, inconsolable crying 3+ hours, breathing problems, swelling beyond the injection site.
• After a new food: hives, vomiting, swelling, breathing changes, or any reaction that looks “off.”
• A choking event, even brief, with full recovery.
• A fall from height (climbing, standing) that ends with a head bump, loss of consciousness, prolonged sleepiness, repeated vomiting, or unusual behavior change.
• A drowning event of any duration.
• Refusing all feeds for 12+ hours, or signs of dehydration.
• If your toddler has stopped doing things they were doing. Lost words, lost gestures, lost interest in faces or toys, lost pretend play. Skill regression always warrants a call.
• Your gut says something is wrong. Call.

📞 Call us when you need us: 808-600-2180

During office hours, you’ll reach our team. After hours, call the same number and select option 1 for our after-hours line (Hello Pediatrics), who follow our medical protocols.

For anything life-threatening, call 911.

Worth mentioning at the visit, even if it feels small

The M-CHAT looks at a specific set of toddler behaviors, but it can’t capture everything. Things worth bringing up today, even if they feel minor:

• Not pointing to show you things (different from pointing to ask for things)
• Not bringing objects to share with you (“look at this!”)
• Not responding consistently to their name
• Limited eye contact in everyday interactions
• Fewer than 6-10 words used meaningfully, or no 2-word combinations yet
• Loss of words, gestures, or skills they previously had
• Repetitive behaviors that are hard to interrupt (lining things up, hand-flapping when excited beyond what’s typical, spinning, intense fixation on parts of objects)
• Extreme rigidity around routines or food
• Aggression that is severe or escalating beyond developmental norms
• Sleep that has been disrupted for weeks without an obvious cause

None of these alone equals a diagnosis. All of them are worth our review. Since you experience your toddler more than anyone, what you notice really matters.

What’s ahead before your 2-year visit

Our biggest break yet. Six months from now we’ll see you for the 2-year visit. Big developments to expect.

Language continues to explode. By 2 years, most toddlers are putting two words together (“more milk,” “daddy go”) and their vocabulary is growing fast, often well past 50 words, though the trajectory matters more than the exact count. Strangers can usually understand about half of what your toddler says. If language has not taken off by 24 months, or if there are no 2-word combinations yet, let’s look at it more closely.

Gross motor skills become more deliberate. Most toddlers can run reasonably well, kick a ball, climb stairs holding a railing, and start to ride a balance bike or push toys. Jumping with both feet off the ground usually comes a little later, closer to 2.5. Don’t forget to build a strong helmet habit once they get their first set of wheels!

Toilet training readiness signs may emerge somewhere in this stretch. Watch for the signs, but don’t push. When they’re ready, we’ll come up with the best strategy.

Tantrums and aggression may peak, then start to ease. The hardest behavioral stretch is often 18 to 24 months. The strategies you’ve been practicing pay off in the second half of year 2 as language grows and emotional regulation slowly comes online.

Since this is our biggest break between visits, message us anytime you need us. Until then, keep talking, reading, and deepening your bond. Personality abounds at this age, and it’s a joy to experience.