disaccharide intolerance

a symptom complex occurring after ingestion of normal quantities of dietary carbohydrates, characterized by abdominal symptoms including diarrhea, flatulence, borborygmus, distention, and pain; it is usually due to deficiency of one or more disaccharidases but may have other causes such as impaired absorption. See also lactose i. and α,α-trehalase, and see sucrase-isomaltase deficiency and disaccharidase deficiency, under deficiency.

Medical dictionary. 2011.

Look at other dictionaries:

  • carbohydrate intolerance — inability to properly metabolize one or more carbohydrates, as in glucose intolerance, hereditary fructose intolerance, and the various types of disaccharide intolerance …   Medical dictionary

  • Lactose intolerance — Inability to digest lactose, a component of milk and most other dairy products. Lactose is sometimes also used as an ingredient in other foods, so those with a lactase deficiency should check labels carefully. The basis for this condition is lack …   Medical dictionary

  • congenital sucrose intolerance — a disaccharide intolerance specific for sucrose, usually due to a congenital defect in the sucrase isomaltase enzyme complex; see sucrase isomaltase deficiency, under deficiency …   Medical dictionary

  • Lactose intolerance — Classification and external resources Lactose (disaccharide of β D galactose β D glucose) is normally split by lactase. ICD 10 …   Wikipedia

  • Sucrose intolerance — Classification and external resources Sucrose ICD 10 E …   Wikipedia

  • congenital lactose malabsorption — disaccharide intolerance II …   Medical dictionary

  • sucrase-isomaltase deficiency — a disaccharidase deficiency caused by mutations in the SI gene (locus: 3q25 q26), which encodes the sucrase isomaltase complex of the intestinal mucosa, leading to deficient activity of the complex with resulting malabsorption of sucrose and… …   Medical dictionary

  • disacchariduria — di·sac·cha·rid·uria (di sak″ə rīd uґre ə) presence of excessive levels of a disaccharide in the urine, as in disaccharide intolerance; types are named for the sugar in question, such as lactosuria, maltosuria, sucrosuria, and …   Medical dictionary

  • disaccharidase — di·sac·cha·ri·dase ( )dī sak ə rə .dās, .dāz n an enzyme (as maltase or lactase) that hydrolyzes disaccharides * * * di·sac·cha·ri·dase (di sakґə rĭ dās″) an enzyme that hydrolyzes disaccharides. In humans, the… …   Medical dictionary

  • disaccharidase deficiency — less than normal activity of disaccharidases of the intestinal mucosa. It usually denotes a generalized deficiency of all such enzymes secondary to a disorder of the small intestine, which clinically may be manifest only as a deficiency of… …   Medical dictionary

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