NCIt definition : A parasitic infectious disorder caused by amoebas. The parasite may cause colitis
which is manifested with bloody diarrhea, abdominal pain, nausea and fever. In rare
cases it may spread to the liver, brain and lungs.;
Alternative definition : NICHD: A gastrointestinal parasitic infection that is caused by Entamoeba histolytica,
and which has a spectrum of manifestations including bloody diarrhea and colitis;
extraintestinal infection involves the liver, brain, and lungs.;