 [ Symptoms ] what diseases are associated with celiac disease [ Disease ] the following diseases are associated with celiac disease an estimated 10 of individuals with celiac disease also have dermatitis herpetiformis dermatitis herpetiformis is a disease of the skin that is characterized by an itchy rash on the extremities buttocks neck trunk and scalp recurrent painful mouth ulcers aphthous stomatitis insulin dependent diabetes juvenile onset or type 1 diabetes autoimmune thyroid disease rheumatoid arthritis systemic lupus