Congenital lactase deficiency

Congenital lactase deficiency: Infant vomits shortly after eating breast milk or cow's milk after birth and cannot grow up. Dehydration, acidosis, lactoseuria, and amino aciduria occur. The condition is severe and the prognosis is poor. This disease, also known as disaccharide intolerance, refers to various congenital or acquired diseases that make the small intestinal mucosa brush border disaccharide enzyme deficiency, which makes the digestion and absorption of disaccharide difficult. A series of symptoms and signs that occur. Divided into primary and secondary disaccharide enzyme deficiency, including lactase, sucrase, maltase, trehalase and other deficiency, the most common lactase deficiency. Lactase deficiency is also called lactose intolerance or lactose malabsorption. Lactase can break down lactose into galactose and glucose. Due to the lack of lactase, patients have only a slight disaccharide absorption after eating lactose, and the rest enter the lower intestine. Bacteria in the intestinal cavity ferment the organic acids such as lactic acid and carbon dioxide and nitrogen. The effect of organic acids on the intestinal tract causes the excretion of acidic feces, which causes abdominal distension and bowel sounds due to excessive gas production.