Ingrown toenails can form when the side of a toenail begins to grow into the flesh surrounding the nail. As a result, the affected toe—most commonly the big toe—may become red, swollen, painful, and—in severe cases—infected.

There are many reasons why an ingrown toenail may develop. Improperly cutting your toenails is a major cause of ingrown toenails. If toenails aren’t cut straight across or are cut too short, the likelihood of getting an ingrown toenail may increase. Other causes include having