The discoloration of toenails, specifically turning black, is frequently caused by subungual hematoma, which is blood trapped beneath the nail. This condition often arises from trauma or repetitive pressure to the toe. The resulting darkened appearance can range from a small spot to encompassing the entire nail surface.
Addressing the source of the discoloration is important for both cosmetic reasons and to rule out more serious underlying issues. While often benign, a darkened toenail can sometimes signal fungal infections or, in rare instances, melanoma. Early detection of these alternative causes allows for timely and appropriate medical intervention, contributing to better health outcomes.
