Are Children's Ingrown Toenails on the Rise? Causes and Parenting Checkpoints

An Increasing Trend: Ingrown Toenails in Children

"Can a child's soft toenails actually become ingrown?" You might find this surprising, but consultation requests for ingrown toenail troubles in elementary/junior high students and toddlers have been rising sharply in recent years.

Children's nails are thinner and more flexible than adults' nails, making them highly susceptible to warping from external pressure. Furthermore, children's feet grow incredibly fast. Often, before parents realize it, their shoes have become too small, leaving their toes constantly squeezed.

Because children may struggle to articulate their foot pain clearly or might hide their discomfort to keep wearing their favorite shoes, it is critical for parents to keep a close eye on their feet.

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3 Major Causes of Ingrown Toenails in Children

A child's specific lifestyle and physical development are heavily tied to nail deformities.

1. Ill-Fitting Shoes (Outgrown or Oversized Footwear)

• Outgrown Shoes: During periods of rapid growth, a child's feet can grow by 5 mm to nearly 1 cm in just 3 to 6 months. Continuing to wear shoes that are "almost outgrown" puts heavy pressure on the tips of the toes, bending the lateral edges of the nail inward.
• The Oversized Shoe Trap: Conversely, buying excessively large shoes thinking "they will grow into them" is equally dangerous. The foot shifts forward inside the shoe, causing the toes to repeatedly slam against the front wall with every step, damaging the nails and causing them to curl.

2. Deep Nail Cutting Habits by Parents

Trimming a child's tiny nails is difficult. Parents often slip the clippers diagonally to deep-cut and round off the edges, fearing that leaving the corners will cause pain or snag on socks. This "deep cutting" (onychocryptosis) causes the skin at the tip to swell up, blocking the path of the new nail as it grows forward and triggering an ingrown nail.

3. Decrease in Outdoor Play and Underdeveloped Toes (Floating Toes)

With kids spending more time playing video games or on smartphones indoors, opportunities to run around outside have decreased. As a result, the strength to grip the ground with the toes fails to develop, and the nails do not receive the healthy upward pressure (ground reaction force) needed to keep them growing flat. Naturally, the nails begin to curl inward.

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A Simple Daily Foot Checklist for Parents

To catch your child's foot problems early, observe their toes after bathing or when they take off their shoes:

• Toe Clearance Check: While your child is wearing their shoes, press down gently on the toe box. Is there about 1.0 cm to 1.5 cm of clearance (wiggle room) in front of the big toe?
• Visual Shape Check: Is the edge of the nail kept straight across, level with the tip of the toe (the "Square Cut")? Are the corners of the nail intact, or have they been cut deep and round?
• Behavioral Observation: Is your child limping slightly or walking in an unnatural way to protect a specific toe? Take notice if they fiddle with their big toe when removing socks or refuse to let you touch it.

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Gentle Home Actions for Early Care

Ensure Proper Shoe Selection

When purchasing new shoes, always have the child's feet measured at a store. Choose shoes where the heel fits snugly and the instep can be securely fastened with laces or Velcro, which physically prevents the foot from sliding forward.

Teach Proper Trimming Early

Educate your child that cutting the corners of the nail too deep is dangerous, and guide them on the importance of trimming straight across in a "Square Cut."

⚠️ Important Caution: Children's nails are extremely delicate. If infected, they can quickly swell, turn red, and ooze pus, making it difficult to walk. If you observe redness, swelling, bleeding, or pus around your child's toenail, avoid self-care or over-the-counter correctors. Please consult a pediatric dermatologist, plastic surgeon, or specialized clinic immediately.