Diarrhea is the passing of loose, watery, unformed stools by the body and the number may vary from several per day to a few every hour. It may be due to some chemical or bacterial toxins, drugs or certain allergies.
Amoebic dysentery is caused by Entamoeba histolytic. These protozoa are parasitic in man. They pass out in the stools and form cysts. Cysts are very resistant forms of the amoeba and can survive long periods of un favourable conditions.
Dysentery is generally caused by two types of germs: (a) Bacillary dysentery caused by 'bacteria' and (b) Amoebic dysentery caused by 'amoeba'.
It is a term characterized by frequent motions, with blood and mucus in the stools, painful straining and general constitutional disturbance. It may be acute of short duration or chronic lasting for months.