Diarrhoea is a simple flux of the bowels, without either the sanguinolent discharges or the intestinal excoriation.
The intestinal contents in such cases were not colorless, but consisted of a sanguinolent, ichorous, putrid fluid.
Dysentery is a flux of the bowels with a sanguinolent discharge and excoriation of the intestines.
sanguinolent san·guin·o·lent (sāng-gwĭn'ə-lənt)
Mixed or tinged with blood.