An<unk>  (abbreviated<unk>  or<unk> <unk>  event (abbreviated ADE) is an expression that describes the unwanted, negative consequences  associated with the use of given medications. An<unk>  is a particular type of<unk>  effect. The meaning of this expression differs from the meaning of "side effect", as this last expression might also imply that the effects can 
be beneficial. The  study of<unk> s is the concern of the field known as pharmacovigilance.
Informing a patient that ARDs may be a sign that a<unk>  is working may increase acceptance of a medication.
Adverse drug reaction
Anaphylactoid reaction
Drug interaction
Paraneoplastic syndrome
Cholinergic crisis
Drug eruption
Thyrotoxic myopathy
Plasma cell disorder