|Description:||This image, depicting a close view of a chimpanzee’s skin surface, revealed pathologic changes including thickening of the epidermis, accompanied by scaliness and drying of the skin, known as acanthosis. This condition was determined to be a case of pinta, due to the bacterium, Treponema carateum.|
Pinta occurs only in tropical Central and South America. It is characterized by a painless papule (primary) followed 2 - 18 months later by secondary papules on the hands, feet and scalp. Though caused by a specie of Treponema bacterium, pinta is a non-venereal form of treponematosis.