The term "ileocolitis," while originally a pathologic designation, has become distinctly clinical. No one, I think, will assert that all cases which show the clinical manifestations of ileocolitis are necessarily combined with the pathologic lesions which the term implies, and certainly not with the severe pathologic lesions which are commonly associated with it. It seems to me that the term ileocolitis conveys to the mind of most persons the clinical picture which follows in from twenty-four to forty-eight hours the acute stage of intoxication of alimentary origin. This period represents a symptom-complex which is more or less regular. The stools, while not so frequent as during the acute stage, contain much mucus and often blood. The temperature ranges usually between 99 and 101 F., prostration is great and the tolerance for food is markedly reduced.
It is this stage of acute attacks of summer diarrhea which offer so much difficulty