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 ...

Transfusion reactions are medical complications that arise after a blood transfusion. They may occur during the transfusion (known as acute) or weeks after it (delayed). They're further classified ...

Infusion reactions, also known as acute infusion reactions or infusion-related reactions, are common adverse effects that can occur when a person receives medication intravenously. Infusion reactions ...