firstname.lastname@example.org) of the Mayo Clinic Rochester, MN, is a gastroenterologist who specializes in treating Celiac disease:
Q: Is there any kidney disease associated with celiac disease?
A: Yes: IgA nephropathy, which is a common condition causing blood in the urine (possibly in microscopic amounts that would not be detected visually), may be caused by celiac disease. This may be similar to what happens in DH, where antibodies produced in the intestine get deposited under the skin. In IgA nephropathy, youve got IgA that was produced somewhere (we dont know where) getting deposited in the kidneys, causing secondary damage to the kidneys.