Which of these are symptoms of an allergic reaction?

Although the reasons why allergies develop aren’t known, there are some substances that commonly cause an allergic reaction. People who have allergies are typically allergic to one or more of the following:

pet dander bee stings or bites from other insects certain foods, including nuts or shellfish certain medications, such as penicillin or aspirin certain plants pollen or molds

Explanation:

Doctors don’t know why some people experience allergies. Allergies appear to run in families and can be inherited. If you have a close family member who has allergies, you’re at greater risk for developing allergies.

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