<s>[INST] why is it that even after treatment of amoeba in my children they still complain of stomach pain and yet the medicine used was very effective to stop the diarrhoea. Also one of them, the stomach feel abit harder than normal.  How can we make the pain go away and are there some food we should keep off. [/INST] Thanks for your query at Chat Doctor! I went through your query! Amebiasis is caused by Amoeba histologic which is a protozoan. The trophozoites penetrate and invade the colon and cause tissue destruction and cause bloody diarrhea colitis. There are healing ulcers which usually cause pain even after treatment. There is a possibility that they have other infection for which you can get stool examined for ova/cysts/larva. Treatment will depend upon the finding. You can give them anti-spasmodic (Dicyclomine) to relieve pain. Consider deforming. You can visit a pediatrician if symptoms persist. Take care! </s>