An allergic reaction is your body’s response to a substance that it deems dangerous or potentially deadly. Spring allergies, for example, are caused by pollens or grasses. A deadlier type of allergic ...

Most people experience no complications during a blood transfusion, but some have adverse reactions during or after treatment. Examples include a fever, chills, itching, or breathing difficulty.

Introducing your baby to solid foods can be such a fun and exciting time. But if you suspect your little one may have allergies, you might be worried about potential reactions — and for good reason!

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 ...