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.
Researchers are still trying to figure out the exact cause or causes of celiac disease. At this point, scientists believe that the disorder is a type of autoimmune disease and that certain genes and environmental factors play a role in a person developing the condition.