Trumpet nail results from increased crosswise curvature of the nail plate causing what effect?

Trumpet nail is characterized by an increased curvature of the nail plate, particularly at the free edge. This condition creates a deep curve that results in the nail pinching at the sidewalls. The pinching is a direct consequence of the exaggerated curvature, which causes the edges of the nail to press together more tightly as the nail extends outward.

Understanding this condition is important for practitioners, as it can impact both the aesthetic appearance and the health of the nail. Care must be taken in nail care practices for clients with trumpet nails, as the shape can lead to discomfort and potential complications if not managed properly.