Hello there, Entamoeba histolytica is a parasite. It seems that your mother is likely to be having Amoebic dysentry/ Intestinal Amoebiasis. Does your mother have loose stools with blood and mucous,associated with crampy abdominal pain? Any history of recent travel ? In a normal stool report ideally there should be no pus cells or RBCs. However ,we do find 1-2pus cells/hpf even in normal individuals. Even if she has diarrhoea and it subsided on its own , this parasite can later invade the liver and cause amoebic liver abscess. So , this requires treatment with drugs like metronidazole /tinidazole initially. Probably followed by diloxanide furoate. Kindly visit the physician at the EARLIEST as the doctor can ask a detailed history and can assess your mother s condition more accurately. Meanwhile follow good personal hygiene. This includes thorough washing of hands with soap and water after using the toilet, and before preparing & eating food. This is applicable to all family members. Entamoeba can spread from person to person by feco- oral route. So , the only way to beat it, is to follow good personal hygiene. Hope this helps :) Dont worry. Just take her to the doctor and start treatment .