Your browser does not support javascript:   Search for gard hereSearch for news-and-events here.

Diseases

Genetic and Rare Diseases Information Center (GARD)

Print friendly version

Congenital sucrase-isomaltase deficiency


Other Names for this Disease

  • Congenital sucrose-isomaltase malabsorption
  • CSID
  • Disaccharide intolerance, 1
  • SI deficiency
  • Sucrase-isomaltase deficiency, congenital
See Disclaimer regarding information on this site. Some links on this page may take you to organizations outside of the National Institutes of Health.

Symptoms

Newline Maker

What are the signs and symptoms of congenital sucrase-isomaltase deficiency (CSID)?

Affected infants usually develop symptoms soon after they first ingest sucrose, which is found in modified milk formulas, fruits, or starches. Symptoms may include explosive, watery diarrhea resulting in abnormally low levels of body fluids (dehydration), abdominal swelling (distension), and/or abdominal discomfort. In addition, some affected infants may experience malnutrition, resulting from malabsorption of essential nutrients, and/or failure to thrive, resulting from nutritional deficiencies. In some cases, individuals may exhibit irritability; colic; abrasion and/or irritation (excoriation) of the skin on the buttocks as a result of prolonged diarrhea episodes; and/or vomiting.[1]

Symptoms of this disorder vary among affected individuals, but are usually more severe in infants and young children than in adults. Symptoms exhibited in infants and young children are usually more pronounced than those of the affected adults because the diet of younger individuals often includes a higher carbohydrate intake. In addition, the time it takes for intestinal digestion is less in infants or young children.[1]
Last updated: 5/17/2011

The Human Phenotype Ontology provides the following list of signs and symptoms for Congenital sucrase-isomaltase deficiency. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms.

Signs and Symptoms Approximate number of patients (when available)
Abnormality of metabolism/homeostasis -
Autosomal recessive inheritance -
Diarrhea -
Malabsorption -
Nephrolithiasis -

Last updated: 11/3/2014

The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature.

The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined.

Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common.


References
  1. Disaccharide Intolerance I. National Organization for Rare Disorders. April 25, 2008; http://www.rarediseases.org/rare-disease-information/rare-diseases/byID/626/viewAbstract. Accessed 7/5/2013.


Other Names for this Disease
  • Congenital sucrose-isomaltase malabsorption
  • CSID
  • Disaccharide intolerance, 1
  • SI deficiency
  • Sucrase-isomaltase deficiency, congenital
See Disclaimer regarding information on this site. Some links on this page may take you to organizations outside of the National Institutes of Health.