Canadian Medical Guide > Diseases > Digestive System Diseases > Gastrointestinal Diseases > Intestinal Diseases > Malabsorption Syndromes > Lactose Intolerance Terms and Definitions




Lactose Intolerance

Medical Definition: The condition resulting from the absence or deficiency of LACTASE in the MUCOSA cells of the GASTROINTESTINAL TRACT, and the inability to break down LACTOSE in milk for ABSORPTION. Bacterial fermentation of the unabsorbed lactose leads to symptoms that range from a mild indigestion (DYSPEPSIA) to severe DIARRHEA. Lactose intolerance may be an inborn error or acquired.

Lactose Intolerance Medical Definitions and Terms

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