Parasitic_diseases
Parasitic disease
Medical condition
A parasitic disease, also known as parasitosis, is an infectious disease caused by parasites.[citation needed] Parasites are organisms which derive sustenance from its host while causing it harm.[1] The study of parasites and parasitic diseases is known as parasitology.[2] Medical parasitology is concerned with three major groups of parasites: parasitic protozoa, helminths, and parasitic arthropods.[1] Parasitic diseases are thus considered those diseases that are caused by pathogens belonging taxonomically to either the animal kingdom, or the protozoan kingdom.[3]