Onychia yaws

Onychovy yaws is a chronic mycosis of the skin and nails, characterized by accelerated growth of the lateral ridges and destruction of the nail plate. Most often it develops in people whose professional activities involve working in unsanitary conditions (road repairers, loaders, catering workers). Onychia fungiformis (or spoon-shaped onychia) is another name for Onychia yaws.