A hypersensitivity reaction happens when the immune system mistakenly identifies harmless substances as harmful. There are several types of hypersensitivity reactions, depending on the class of ...

Some people have an allergic reaction to chemotherapy. Allergic reactions can range from mild skin irritation to life threatening anaphylaxis. To avoid this, your care team will monitor you during and ...

Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

Allergic reactions to birth control are rare. If you think you are having one, it’s crucial to seek medical advice to find the cause. They can also help you explore alternative options. If your birth ...

Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

This article explains how to use reactions on the Facebook website and mobile app. How to Use Reactions on Facebook.com Here's how to apply a reaction to a post: Pick a post that you want to react to.