Secondary Lactase Deficiency: This form of lactase deficiency results from some sort of damage to the intestines either due to a disease or surgery. Some possible causes include untreated celiac disease, long-term use of antibiotics, giardiasis, carcinoid syndrome, HIV enteropathy, gastrectomy and intestinal resection. Lactase enzyme activity usually develops late in pregnancy so a preterm infant will not yet have developed this enzyme function. The greater the degree of prematurity, the greater the reduction in lactase activity. More detailed information about the symptoms, causes, and treatments of Secondary Lactase Deficiency is available below.
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Prognosis for Secondary Lactase Deficiency: Symptoms improve rapidly once lactose is eliminated from the diet. When the cause of the condition is eliminated, lactose-products may sometimes be reintroduced without causing symptoms.
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