Which condition is associated with injuries to the nailbed?

The condition associated with injuries to the nailbed is accurately represented by a bruised nailbed. This occurs when there is trauma to the area beneath the nail, often resulting from direct impact or pressure. The injury can cause bleeding under the nail, which manifests as a discoloration that is commonly referred to as a bruise.

Injuries to the nailbed can lead to pain and discomfort, and in more severe cases, may also result in nail separation from the nailbed or even nail loss. The direct correlation between trauma and the bruised nailbed makes this the correct choice, as it highlights the specific consequence of an injury to the area beneath the nail.

Other conditions listed, such as discolored nails, hangnails, and Beau's lines, do not specifically arise from an injury to the nailbed. Discolored nails can have various causes including fungal infections or systemic health issues, while hangnails are related to skin rather than the nailbed itself. Beau's lines are indicative of underlying health problems or stress, reflecting growth disruption rather than an injury.