Source:http://linkedlifedata.com/resource/umls/id/C0022951
MSH: 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.,NCI: The inability to digest or absorb lactose, a type of sugar found in milk and other dairy products.,MEDLINEPLUS: <p>Lactose intolerance means that you cannot digest foods with lactose in them. Lactose is the sugar found in milk and foods made with milk. After eating foods with lactose in them, you may feel sick to your stomach. You may also have</p><ul><li> Gas </li><li> Diarrhea </li><li> Swelling in your stomach </li></ul><p>Your doctor may do a blood, breath or stool test to find out if your problems are due to lactose intolerance.</p><p>Lactose intolerance is not serious. Eating less food with lactose, or using pills or drops to hel