Medical Definition of excoriation. 1: the act of abrading or wearing off the skin chafing and excoriation of the skin.
malaria. noun. 1  An infectious disease characterized by cycles of chills, fever, and sweating, caused by a protozoan of the genus Plasmodium in red blood cells, which is transmitted to humans by the bite of an infected female anopheles mosquito.
Malaria is a disease caused by a parasite that is transmitted to humans by the bite of an infected Anopheles mosquito. These mosquitoes are found in the tropics and subtropics in almost all countries.hese are the species of Plasmodium (single-celled parasites) that can infect humans and cause illness: Plasmodium falciparum (or P. falciparum). Plasmodium malariae (or P. malariae). Plasmodium vivax (or P. vivax).