Thimble nail

**Thimblenail.** This is the name of the type of onychia when the nail plate begins with a triangular plate and ends with a bumpy, dotted surface. The pathology is accompanied by the growth of one or more ridges on the nail bed and its deformation. As a result, the nail acquires an uneven, broken tip, resembling a thimble or an elongated oval.

A nail with this kind of onychia is a health hazard, especially if it is observed in one of the fingers. Such changes in the nail plate cause problems with movement, mainly when