Keywords |
  • Medical Science


Allergy is a reaction to a specific substance such as pollen, domestic animal hair and fur, or certain foods. The reaction generally produces sneezing, constriction of the respiratory tract, increased tear formation, and skin rash. The symptoms are caused by release of histamine into the blood circulation and are the way in which the body removes the foreign substance. The severity of the symptoms can be reduced by administering antihistaminergic agents.


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