Yes, it is completely normal for babies to curl their toes. Toe curling is one of the earliest reflexes humans develop, appearing as early as 25 weeks of gestational age. Most healthy infants will curl their toes when their feet are touched, when they’re placed on a surface, or seemingly at random throughout the day. This reflex is so reliable that its absence, not its presence, is what concerns pediatricians.
Why Babies Curl Their Toes
Babies are born with a set of primitive reflexes that develop in the womb and gradually fade as the brain matures. Toe curling is driven by two of these reflexes, and each one works differently.
The plantar grasp reflex causes a baby’s toes to curl inward when pressure is applied to the sole of the foot just behind the toes. It works the same way as the palmar grasp reflex in the hands, where a baby automatically grips your finger. This reflex is active in all healthy newborns and remains remarkably consistent through the first six months of life. It typically disappears between 6 and 12 months, with most babies losing it around 8 to 9 months.
The Babinski reflex is triggered differently. When the sole of the foot is firmly stroked along its length, the big toe fans upward while the smaller toes spread out. This looks unusual to adults because in older children and adults, the toes curl downward in response to the same stimulus. But the upward fanning pattern is normal in babies and can persist until age 2, though it sometimes disappears as early as 12 months.
What Toe Curling Looks Like at Different Ages
In the first six months, you’ll see toe curling frequently. It happens when your baby’s feet touch a blanket, when you hold the soles of their feet, or when they kick against a surface during tummy time. This is the plantar grasp at work, and it fires reliably with almost any pressure on the ball of the foot.
Between 6 and 12 months, as your baby starts pulling to stand and cruising along furniture, the plantar grasp gradually fades. This is necessary for balance. Walking requires the toes to flatten and spread against the ground, so the brain suppresses the automatic curling response to make room for voluntary control. You may still see occasional curling during this period, especially when your baby is on an unfamiliar surface or gripping with their feet for stability. That’s normal.
After 12 months, reflexive toe curling should mostly be gone. Some toddlers will still curl their toes briefly when concentrating on standing or when barefoot on a new texture like grass or sand. This is a voluntary response, not a reflex, and it’s harmless.
Curly Toes vs. Toe Curling Reflexes
Some babies have toes that physically curve or overlap, usually the third, fourth, or fifth toes. This is a structural condition called curly toes, and it’s different from the reflexive curling described above. Curly toes are present all the time, not just in response to touch or pressure.
Most children with curly toes never experience problems. They walk and run normally, and the condition often improves on its own as the foot grows. It only becomes a concern if the child develops pain, blisters from toes rubbing against shoes, or frequent tripping or balance issues. Surgery is rarely needed and is reserved for cases where the toes are rigid, painful, or interfere with daily activity.
Signs That Toe Curling May Not Be Normal
While reflexive toe curling is healthy in young babies, certain patterns can signal a problem with muscle tone. Hypertonia, a condition where muscles are too tight, can cause persistent, forceful toe curling that looks different from a normal reflex. In babies with hypertonia, the curling is harder to overcome. You can’t easily straighten the toes by gently pressing on them, and the stiffness is present even when the baby is relaxed or sleeping.
Other signs of abnormally high muscle tone include:
- Stiff arms, legs, or neck that are difficult to move, especially during diaper changes or dressing
- Limited range of motion in the ankles, knees, or hips
- Muscles that feel tight to the touch even when your baby is calm and at rest
- Movements that look stiff or robotic rather than the loose, floppy quality typical of young babies
- Involuntary twitching or jerking of the muscles
The key distinction is flexibility. A healthy baby’s toe curling is easy to reverse with gentle pressure, comes and goes depending on what’s touching the foot, and relaxes completely during sleep. Toe curling caused by hypertonia is persistent, rigid, and doesn’t ease up when the baby is resting.
When the Reflex Stays Too Long
If the plantar grasp reflex hasn’t faded by 12 months, or the Babinski reflex (big toe fanning upward) persists well past age 2, it can indicate that the nervous system isn’t maturing on the expected timeline. On its own, a slightly delayed disappearance isn’t necessarily alarming. But combined with other developmental delays, like not pulling to stand, not bearing weight on the legs, or not reaching motor milestones, it warrants evaluation.
Pediatricians also watch for exaggerated reflexes at any age. If stroking the foot produces an unusually strong or prolonged response, or if the baby’s foot seems locked in a curled position, these patterns can point to increased muscle tone that may benefit from physical therapy. In older toddlers who are walking, toe walking more than half the time, especially if it happens even while wearing shoes, is a specific sign that prompts referral for further assessment.
Practical Tips for Parents
Barefoot time on safe surfaces is one of the best things you can do for your baby’s foot development. When babies can feel the ground directly, they get sensory feedback that helps the brain calibrate balance and gradually suppress primitive reflexes at the right pace. Smooth floors, play mats, and soft grass all provide useful input.
Pay attention to footwear and socks. Tight socks, snug footed pajamas, or shoes that are too small can trigger or sustain the curling reflex by pressing against the sole. For babies who aren’t walking yet, socks with a loose fit are sufficient. Once your child starts walking, flexible, flat-soled shoes with room for the toes to spread give the foot the most natural movement.
If your baby’s toe curling seems unusually rigid, doesn’t change in response to touch, or is accompanied by stiffness in other parts of the body, bring it up at your next pediatric visit. Most of the time, what you’re seeing is a perfectly healthy reflex doing exactly what it’s supposed to do.