A highly contagious tropical disease that chiefly affects children, caused by the spirochete Treponema pertenue and characterized by raspberrylike sores, especially on the hands, feet, and face. Also called frambesia.
Origin: From American Spanish yaya, sore, from Carib yaya, disease.
An infectious tropical disease caused by Treponema pertenue, characterized by the development of crusted granulomatous ulcers on the extremities that may cause bone and joint destruction in later stages of the disease. Also called boubas, bubas, frambesia, granuloma tropicum, pian, rupia.