What is Congenital sucrase-isomaltase deficiency (CSID)?
This is a genetic disorder that affects a person’s ability to digest certain sugars. Other names for CSID include genetic sucrase-isomaltase deficiency (GSID), congenital sucrose intolerance, congenital sucrose-isomaltose malabsorption, disaccharide intolerance ISI deficiency, or sucrase-isomaltase deficiency. This fact sheet provides an overview of CSID, including symptoms, causes, and treatment.
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