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 serious, sometimes fatal, disease spread by mosquitoes and caused by a parasite. Malaria was a significant health risk in the U.S. until it was eliminated by multiple programs in the late 1940s.The illness presents with flu-like symptoms that include high fever and chills.alaria is a serious, sometimes fatal, disease spread by mosquitoes and caused by a parasite. Malaria was a significant health risk in the U.S. until it was eliminated by multiple programs in the late 1940s.