Abnormal drug response

What it means

An anomalous response to a medication related to individual variation in metabolic or immune response to drugs varying from potentially from potentially life-threatening adverse drug reactions to alteration of therapeutic efficacy.

Rare diseases that can present with this1

The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.

Part of the broader category