What describes a nail whose edges curl around to form a trumpet shape?

A nail whose edges curl around to form a trumpet shape is accurately described as a trumpet nail. This condition results in the sides of the nail growing down and around, resembling the shape of a trumpet, which can cause discomfort and affect the overall appearance of the nail.

Understanding the terminology related to nail conditions is important for proper identification and treatment. For instance, onychosis refers to any disease or condition of the nail, but it does not specifically describe the curling shape. Onychophagy pertains to the habit of nail biting, which is a different issue altogether. Onychomycosis, on the other hand, is a fungal infection of the nail, characterized by symptoms such as discoloration, thickening, and possible separation from the nail bed, but it does not involve the trumpet-like deformation of the nail. Thus, trumpet nail is the most precise term for the described condition.