What Happens at Your 15-Month Well-Child Visit

The 15-month appointment is a standard checkup where your pediatrician tracks your toddler's growth, development, and overall health

At 15 months, your child is past the infant stage but not yet a full toddler — and this visit is designed for that in-between moment. Your pediatrician will measure your child's height, weight, and head circumference, check their hearing and vision, and ask you detailed questions about how they're eating, sleeping, and moving. This is also when most children receive the second dose of the varicella (chickenpox) vaccine and a booster dose of other routine vaccines, though the exact schedule depends on what your child received at earlier visits.

The appointment typically lasts 20 to 30 minutes. You'll spend some time in the waiting room, then move to an exam room where a nurse takes initial measurements and vital signs. Your pediatrician will then do a physical exam — listening to the heart and lungs, checking the ears and throat, feeling the abdomen, and watching your child move and play. Much of the visit is conversation: your doctor will ask about language, behavior, eating habits, and any concerns you have.

Key Takeaways

• Bring your child's vaccination record so your pediatrician knows which shots are due and can avoid duplicates.
• Your pediatrician will ask about language development, so be ready to describe how many words your child uses and whether they follow simple instructions.
• The 15-month visit usually includes vaccines, so plan for your child to be fussy or have a sore leg afterward — acetaminophen or ibuprofen can help.
• Write down any behavioral or developmental concerns before the visit so you don't forget to mention them during the appointment.

What your pediatrician will check during the exam

The physical exam at 15 months follows a standard pattern. Your pediatrician will look in your child's ears with an otoscope, check the throat, listen to the heart and lungs with a stethoscope, and feel the belly to make sure the organs feel normal. They'll also check the fontanelle (the soft spot on top of the head) — it should be nearly closed by now, though some give remains normal. Your child's reflexes will be tested, and the doctor will watch them walk, climb, or play to assess coordination and muscle strength.

One key part of the 15-month visit is assessing your child's development. Your pediatrician will ask whether your child can point to objects, say a few words, understand simple requests like "where's your nose," and show interest in other children. They may ask your child to stack blocks, scribble with a crayon, or drink from a cup to see what skills are emerging. If your child was born prematurely, your pediatrician will still use corrected age (age since birth minus the number of months early) to assess development, though by 15 months the difference is becoming less significant.

Vaccines given at the 15-month visit

Most children receive the second dose of varicella vaccine at 15 months. Some pediatricians also give a booster dose of diphtheria, tetanus, and pertussis (DTaP) or other vaccines depending on the schedule and what your child has already received. A few practices give the first dose of hepatitis A vaccine around this age, though others wait until 18 months. Your pediatrician will review your child's record and tell you which vaccines are due.

Vaccines are given by injection, and your child will likely cry. It's normal for the injection site to be sore or slightly swollen for a day or two, and some children run a low fever or are fussy. Acetaminophen or ibuprofen (in the dose appropriate for your child's weight) can help with discomfort. Serious side effects are rare, but your pediatrician will give you a vaccine information sheet that describes what to watch for and when to call.

What to bring and how to prepare

Bring your child's vaccination record — either the card from previous visits or a printout from your pediatrician's office. If your child has been seen elsewhere recently, bring those records too. Write down any questions or concerns before you arrive so you don't forget them in the moment. If your child has had any illnesses, injuries, or changes in behavior or eating since the last visit, mention those.

Dress your child in clothes that are easy to remove so the exam goes quickly. If your child is anxious about medical visits, you might bring a comfort item like a stuffed animal or blanket. Some pediatricians allow a parent to hold the child during the exam; others prefer the child to sit on the exam table. Ask your pediatrician's office what works best for them.

Development milestones your pediatrician will ask about

At 15 months, pediatricians look for a range of skills, not a single checklist. Most children at this age say a few words (anywhere from 3 to 50 is normal), point to objects they want, and understand simple requests. They can usually walk, though some are still crawling or cruising along furniture. They may stack two blocks, scribble with a crayon, and show interest in feeding themselves with a spoon or fork, even if they're messy.

Your pediatrician will ask whether your child plays with toys in purposeful ways (rolling a ball, putting objects in a container), shows affection, and responds to their name. They'll also ask about behavior — whether your child has tantrums, how they respond to "no," and whether they sleep through the night. There's wide variation in all of these areas, and your pediatrician is looking for overall progress, not perfection. If your child is behind in one area but strong in others, your doctor may simply watch and recheck at the next visit, or they may refer you to early intervention services if there's concern.

What happens if your pediatrician has concerns

If your pediatrician notices something that doesn't fit the expected range — for example, if your child isn't walking, has very few words, or doesn't respond to their name — they'll discuss it with you. This doesn't mean something is wrong; it means your pediatrician wants to monitor more closely or get more information. They may ask more detailed questions, watch your child play longer, or suggest a follow-up visit in a few weeks to see if skills are emerging.

If your pediatrician thinks a referral is needed, they can refer your child to early intervention services (usually free for children under 3 in most states) for a developmental screening. Early intervention can assess your child's skills in detail and, if needed, provide therapy or support. Your pediatrician will explain what they're concerned about and what the next steps are. Having concerns raised at a checkup is common and doesn't mean your child has a disability — it often means your pediatrician wants to make sure your child gets support if they need it.

After the visit: what to expect and when to call

After the appointment, your child may be fussy or have a sore leg from the vaccines. This usually settles within a day or two. Keep the injection site clean and dry. If your child develops a fever over 103°F, has difficulty breathing, or shows signs of an allergic reaction (swelling of the face or lips, rash, difficulty swallowing), call your pediatrician or go to the emergency room right away. These reactions are very rare, but your pediatrician will have given you information about what to watch for.

Your pediatrician will give you a summary of the visit and any recommendations — for example, about nutrition, sleep, or safety. If vaccines were given, you'll receive a record to keep. If your pediatrician referred your child for early intervention or another service, they'll provide contact information and may send records directly. Write down the date of your next visit (usually at 18 months) before you leave so you don't forget to schedule it.

Frequently Asked Questions

Can I skip the 15-month visit if my child seems healthy?

The 15-month visit is primarily for vaccines and developmental screening, not because illness is expected. If your child is healthy and you're not concerned about development, talk to your pediatrician about whether the visit is necessary for your situation. Some practices combine the 15-month and 18-month visits into one appointment if parents prefer.

What if my child is sick on the day of the appointment?

Call your pediatrician's office and reschedule. If your child has a fever or is actively ill, vaccines are usually postponed until they've recovered. Most offices can fit you in within a week or two, and vaccines can be given at that later visit without any problem.

My child isn't walking yet at 15 months — should I be worried?

Walking typically begins between 12 and 18 months, so not walking at 15 months is within the normal range. Your pediatrician will assess whether your child is crawling, cruising along furniture, or showing other signs of strength and coordination. If your pediatrician has concerns, they'll discuss it with you and may suggest monitoring or early intervention screening.

Do I need to give my child pain relief before the vaccines?

Most pediatricians recommend waiting to see if your child is uncomfortable rather than giving medicine beforehand. If your child is fussy or has a sore leg after the visit, acetaminophen or ibuprofen in the appropriate dose can help. Ask your pediatrician what dose is right for your child's weight.

What if my child has a reaction to the vaccine?

Minor reactions like soreness at the injection site, low fever, or fussiness are common and resolve on their own. Serious allergic reactions are very rare. Your pediatrician will give you a vaccine information sheet that lists symptoms to watch for and when to call. If you notice anything concerning in the hours or days after the visit, call your pediatrician right away.