Black Toenails

Black toenails (subungual hematomas) are bruised toenails that result from blood collecting under the nail. They can be caused by crushing, impact, or injury to the toe, such as dropping something heavy on or stubbing the toe. Runners frequently suffer from black toenails due to the big toe rubbing against the tip of an ill-fitting […]

Ingrown Toenails

Ingrown toenails, known as onychocryptosis, most commonly occur on the big toe and are caused by pressure that drives the edge of the nail into the surrounding skin. Ingrown toenails can result from improper nail trimming, injuries, fungal infections, and toe deformities; they can also be inherited. The condition causes pain, redness, inflammation, swelling, and […]