What is the term for the abnormal curve or shape of the nail?

The abnormal curve or shape of the nail is referred to as a trumpet nail. This condition is characterized by a nail that has an exaggerated curvature, often resembling a trumpet or cone shape. It typically occurs due to a variety of factors, including genetic predisposition, trauma, or certain medical conditions. Understanding this condition is important for nail care professionals, as it can impact the overall health and appearance of the nails.

Other options refer to different nail conditions or structures: nail grooves are indentations that can occur along the nail plate; onychoryptosis pertains specifically to an ingrown nail; and onychomycosis is a fungal infection affecting the nails. Each of these terms describes distinct disorders or features of the nail, but they do not encompass the specific curvature associated with trumpet nails.