There are plenty of diseases which our body over-responds to. Colitis is one great example of the body basically attacking its own colon via it's immune system for no known scientific reason. And there are plenty of others.
Typically the bodies default response to everything, real of not, is inflammation. Which is the primary symptom of allergies. Which also happens to be the symptom most responsible for the popular diseases for which there is no rational/clear response for such a potentially dangerous over-reaction - other than unlucky genetics.
Typically the bodies default response to everything, real of not, is inflammation. Which is the primary symptom of allergies. Which also happens to be the symptom most responsible for the popular diseases for which there is no rational/clear response for such a potentially dangerous over-reaction - other than unlucky genetics.