What is the term for a disease in which the immune system makes an inflammatory response to a harmless antigen?

• Correct Answer: allergy
• influenza
• nausea
• diabetes

Explanation: An allergy is a disease in which the immune system makes an inflammatory response to a harmless antigen. Any antigen that causes an allergy is called an allergen. Allergens may be inhaled or ingested, or they may come into contact with the skin. Two common causes of allergies are shown in Figure below . Inhaling ragweed pollen may cause coughing and sneezing. Skin contact with oils in poison ivy may cause an itchy rash.

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