Immunoglobulin A deficiency

Selective immunoglobulin A (IgA) deficiency (SIgAD) is a genetic immunodeficiency, a type of hypogammaglobulinemia. People with this deficiency lack immunoglobulin A (IgA), a type of antibody that protects against infections of the mucous membranes lining the mouth, airways, and digestive tract. [Source: Wikipedia ]

Synonyms
IgA deficiency
May Cause
Gallstone
Intestinal lymphangiectasia