Medical Conditions

Car Sickness in Babies and Toddlers

The short answer

Motion sickness occurs when the brain receives conflicting signals from the eyes, inner ear, and body about movement. It is uncommon in babies under 2 but becomes more common in children ages 2-12. Rear-facing car seats may contribute because the child cannot see the direction of travel. Strategies include fresh air, avoiding heavy meals before travel, looking out the window (for forward-facing children), and frequent stops. Medication is generally not recommended for very young children without a pediatrician's guidance.

By Age

What to expect by age

True motion sickness is very rare at this age. If your baby vomits in the car, it is more likely due to reflux, overfeeding before travel, or being uncomfortable in the car seat position. Ensure proper car seat positioning and avoid feeding large volumes right before a car ride.

Motion sickness remains uncommon. If your baby regularly vomits in the car, check car seat recline angle and positioning. Some babies are sensitive to car seat position, and adjusting recline may help. If vomiting is frequent outside the car as well, discuss with your pediatrician.

Sensitivity to motion may begin to develop. Keep car rides smooth, provide fresh air through cracked windows, and offer small snacks rather than large meals before travel. A rear-facing seat means the child cannot see out the front window, which can worsen motion sensitivity.

Motion sickness becomes more common from age 2 onward. For toddlers in rear-facing seats, ensure they can see out a side window. Provide light snacks (crackers, dry cereal) and avoid heavy or greasy foods before travel. Take frequent breaks on long trips. Ginger in age-appropriate forms may help. Avoid screens during car rides as this can worsen symptoms.

What Should You Do?

When to take action

Probably normal when...
  • Your toddler occasionally feels sick on longer car rides or winding roads
  • Car sickness improves with fresh air, frequent stops, and lighter eating before travel
  • Your child feels better quickly after getting out of the car
  • Motion sickness runs in your family — it has a strong genetic component
Mention at your next visit when...
  • Your baby under 12 months vomits frequently during car rides and you are unsure if it is motion sickness or another issue like reflux
  • Car sickness is so severe that your child cannot tolerate any car trip without vomiting, significantly limiting daily activities
  • You want to discuss medication options for an older toddler before a long road trip
Act now when...
  • Your baby or toddler vomits repeatedly and shows signs of dehydration — no wet diapers for 6+ hours, no tears when crying, sunken fontanelle
  • Vomiting is accompanied by fever, diarrhea, or lethargy that suggests illness rather than motion sickness

Sources

Flying with Baby (Ear Pressure)

Ear pain during flights is caused by changes in cabin air pressure during takeoff and landing. Babies cannot intentionally equalize the pressure in their ears like adults can, which can cause significant discomfort and crying. Feeding (breast or bottle), using a pacifier, or encouraging swallowing during ascent and descent helps equalize ear pressure. Most pediatricians consider flying safe for healthy babies after the first 1-2 weeks of life.

My Baby's Head Shape Looks Abnormal

Many babies develop temporary head shape irregularities that are completely normal. A cone-shaped head from vaginal delivery reshapes within days. Mild positional flattening (plagiocephaly) from sleeping on the back is very common and usually improves with repositioning and tummy time. However, head shape changes involving ridges, a persistently bulging fontanelle, or rapid head growth changes should be evaluated to rule out craniosynostosis.

Achondroplasia (Dwarfism) in Babies

Achondroplasia is the most common form of short-limbed dwarfism, affecting about 1 in 15,000 to 40,000 births. It is caused by a mutation in the FGFR3 gene and is usually apparent at birth with characteristic features including short limbs, a larger head, and a prominent forehead. Intelligence is normal. With monitoring for specific complications and supportive care, children with achondroplasia lead full, active, and independent lives.

Adenoid Hypertrophy and Breathing

Adenoids are lymphoid tissue located behind the nose that help fight infection in young children. When adenoids become enlarged (adenoid hypertrophy), they can block the nasal airway, causing chronic mouth breathing, snoring, nasal speech, and sleep-disordered breathing. Enlarged adenoids are most common between ages 2-7 and are a leading cause of obstructive sleep apnea in young children. Treatment ranges from watchful waiting and nasal steroids to surgical removal (adenoidectomy) if breathing or sleep is significantly affected.

Air Quality and Baby Health

Babies and young children are more vulnerable to air pollution than adults because they breathe faster, their lungs are still developing, and they spend more time close to the ground where some pollutants concentrate. The EPA recommends keeping babies indoors when the Air Quality Index (AQI) exceeds 100 (orange level). During wildfire smoke events, keep windows closed, use air purifiers with HEPA filters, and monitor your child for coughing, wheezing, or difficulty breathing. Long-term exposure to air pollution can affect lung development.

Altitude Sickness in Babies

Babies and toddlers can experience altitude sickness when traveling above 5,000-8,000 feet (1,500-2,500 meters). Symptoms are harder to recognize in infants because they cannot describe how they feel. Watch for unusual fussiness, poor feeding, disrupted sleep, vomiting, and fast breathing. Gradual ascent is the best prevention. Most pediatricians recommend avoiding sleeping at very high altitudes (above 8,000 feet) with infants when possible, and descending immediately if symptoms appear.