By Shreoshree Chakrabarty: For individuals managing diabetes, insulin must be administered into the subcutaneous tissue—the layer of fat located between the skin and muscle. This tissue, also called ...

After receiving an injection, some people experience symptoms at the injection site on the skin. This reaction is a common adverse effect of vaccines, Botox injections, biologics, and chemotherapy.

Injections deliver liquid medications, fluids, or nutrients directly into a person’s body. Different types of injections include intravenous, intramuscular, subcutaneous, intraosseous, and intradermal ...