What Causes Nail Fungus? Prevention & Treatment Guide for 2025
Introduction: Why Nail Fungus Is Still a Big Problem in 2025 Nail fungus — also known as onychomycosis — affects millions of people worldwide, causing thick, brittle, discolored, and sometimes painful nails. While it might seem like a minor cosmetic issue, fungal nail infections can spread, worsen, and even lead to secondary infections if left