Plantar Warts in Kids: When to Treat

Plantar warts are one of the most common foot problems in children. They're caused by a strain of HPV that loves warm, damp environments — pool decks, gym showers, shared bathmats. They're contagious, but most kids' immune systems eventually clear them on their own, sometimes after a year or two.

How to spot one

• Usually on the bottom of the foot, often on a pressure point
• Rough, callus-like surface
• Often has small black dots inside (tiny blood vessels, not 'seeds')
• Hurts when pinched side-to-side, more than pressed straight down

When to leave it alone

If the wart is small, not painful, and not spreading, watchful waiting is reasonable. Many disappear on their own in 12–24 months. Keep feet clean and dry, wear flip-flops in shared showers, and don't share towels.

When to treat

• Pain when walking or playing sports
• Multiple warts appearing in a cluster
• Spread to other family members
• The wart has been there over 18 months with no change
• Your child is self-conscious about it

What actually works

Over-the-counter salicylic acid patches work for some warts if used consistently for weeks. Freezing (cryotherapy) is the classic clinic option but can be uncomfortable for kids. Swift microwave therapy is newer: it delivers a few seconds of focused microwave energy into the wart, triggering the immune system to clear it. It's quick (under a minute per wart), doesn't require numbing, and most kids handle it well.