In treating of diet in the chronic catarrhal inflammations of the stomach and intestines it is not intended to limit the discussion to those cases only which are usually classed as such. Our present exact methods show that chronic gastric catarrh in its earlier stages is rarely accompanied by nausea or vomiting and not always by pain in the stomach itself; also that cases of gastritis grave enough to have seriously impaired the health may be characterized by an increase rather than by a diminution of the appetite.
Again the same methods prove the frequent coexistence of catarrhal disease in the small intestines and persistent constipation or constipation alternating with diarrhea when the disease has become more advanced. Obstinate chronic diarrhea points usually to an aggravated catarrhal inflammation of the intestinal mucous membrane complicated in many cases with ulceration.
A proper regulation of the diet is important in most derangements
REED B. DIET IN THE CHRONIC CATARRHS OF THE GASTRO-INTESTINAL TRACT.. JAMA. 1898;XXX(8):421–424. doi:10.1001/jama.1898.72440600021002f