الفهرس 
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Abstract
Diarrhoea clinically presented in tv:o for^s ,either acute or chronic B Acute diarrhoea is abrupt in onset #cd lasts only £ew days . Chronic diarrdee is that in which the
i
mtiol episode lasts nore than two ??eek0 and / or the syrtp-torne recur after tne initial attscK .
include osmotic retention of
ii: the 51* t lunen f secretion of solute and -.vater into ie gut lumen , exudation into the bov^el and / or disordered between tJie chyme and the absorptive surface of the
Acute diarrhoea is caused by a wide variety of leaudes that may be infectious , tozio , dietary ar.d others , Infectious diarrhoea is cordon In -tropics including
The causes of chronic diarrhoea .-nay t>e either
or organic . Functional diarrhoea iicts shown an in incidence . Irritable bov.-el syndrome has me one the roost coiaraan gastroentrologic problems met with In clijiical practice particularly in Western countries Ffie coonon organic causes of chronic diarrhoea are
rioi? , inriarmna.1:or;T bov;el di