MEANING : (n.) an intelligent person with a non-social obsession (such as computer programming) that renders him/her annoying or unattractive.
Celiac disease is believed to be an autoimmune disorder. While genetics appear to play a role in causing it, some people at risk for celiac disease will not develop it until something triggers their immune system, such as a viral infection or severe emotional stress. An Introduction to Celiac Disease and Its Causes.
Celiac disease is now considered an immune disorder that is triggered by an environmental agent (gliadin) in genetically predisposed persons. The wide spectrum of clinical manifestations is the result of a complex interplay of varying environmental, genetic, and immune factors.