Which nail condition is identified by a free edge that curls inward?

The condition characterized by a free edge that curls inward is known as Trumpet Nails. This nail disorder typically manifests as a curvature where the sides of the nail grow longer than the center, causing the free edge to turn down and inward. It can be caused by various factors, including genetic predispositions, trauma to the nail bed, or other underlying health conditions. Understanding this specific shape helps in identifying the condition and differentiating it from other nail issues.

Leukonychia refers to white spots or lines that appear on the nails, often due to minor trauma or other underlying health issues, but it does not involve the shape of the nail being altered. Mildew is a type of fungal infection that affects the nails, usually leading to discoloration and damage but does not affect the structure of the free edge in the manner described. Paronychia is an infection of the skin surrounding the nail, which could result in redness and swelling, but again, does not result in curling of the nail edge. Recognizing these distinct characteristics aids in proper diagnosis and treatment for various nail conditions.