An Immune Reaction to a Sensitivity or Irritant
This page is the CodyCross answer for the clue below from Games, Group 959, Puzzle 2 (Area of Effect).
Question is: An Immune Reaction to a Sensitivity or Irritant
and the answer is: ALLERGY
Word Meaning:
ALLERGY — (medicine, immunology, loosely) A disorder of the immune system causing adverse reactions to substances (allergens) not harmful to most and marked by the body's production of histamines and associated with atopy, anaphylaxis, and asthma; any condition of hypersensitivity to a substance.
Definitions from Wiktionary.