Crohn's disease is an inflammation of the layer of the colon causing malabsorption and mimics amoebiasis like symptoms, loss of weight etc. It is an auto immune disease.
Homeopathic Medicine has good remedies to get rid of the diarrhoea, mucus in the stool, pain abdomen, bleeding rectum etc. Medicines like Nux vom, Merc sol, Colocynth, Kurchi etc. have a capacity to see the disease into remission.