Toenail Growing Under Toenail: 2026 Painful Reality

Noticing a toenail growing under another toenail can be alarming and uncomfortable. Many people panic, thinking it’s a serious infection or permanent damage. In reality, this condition is often linked to nail trauma, pressure, or the natural nail regrowth process. In this guide, I’ll explain why a new toenail grows under the old one, what it means for your health, and how to treat it safely before it gets worse.