Definition

A drug allergy is an adverse reaction to a medication, often an antibiotic, that is mediated by the body's immune system. A drug sensitivity is an unusual reaction to a drug that does not involve the immune system.

Description

Adverse reactions to medication may be allergic reactions involving a child's immune system, individual sensitivities to a drug, or side effects of the drug itself. Some children are allergic or sensitive to drugs that are not harmful for most people. Some drugs, such as aspirin and penicillin or related antibiotics, may induce allergic reactions in some children and sensitivities in other children.

Drug...