What is a common symptom of an allergic reaction?

A common symptom of an allergic reaction includes rash, swelling, or difficulty breathing. These symptoms typically arise when the immune system responds to a substance it mistakenly identifies as harmful, known as an allergen. For example, when a person is exposed to pollen, certain foods, or bee stings, they may develop a rash, hives, or swelling as the body releases histamines in response. In more severe cases, difficulty breathing can occur due to swelling in the throat or a condition known as anaphylaxis, which requires immediate medical attention.

In contrast, increased energy and excitement are generally not associated with allergic reactions. Sudden weight loss can indicate other medical conditions, and fatigue and malaise are often symptoms of various illnesses but are not specific indicators of allergic responses. Understanding these symptoms is crucial for babysitters, as they may encounter children who have allergies and need to recognize and respond appropriately to these signs.