What Are the Symptoms of an Allergy?

An allergy arises when your immune system mistakes a harmless substance (allergen) for a threat. This triggers an inflammatory response, leading to symptoms that vary depending on the allergen and the individual. These signs can help you identify a potential allergy and seek medical attention.
Common allergy symptoms often involve the respiratory system. You might experience a runny or stuffy nose, accompanied by frequent sneezing. Itchy, watery eyes are another telltale sign. In some cases, difficulty breathing, wheezing, or coughing can occur, indicating a more serious reaction.
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