Reaction

Idiopathic Urticaria reporting signals

Last recalculated 2026-09-14T18:28:35.993900+00:00 · 972 reports · 2 co-occurring drugs

As of the last recalculation, Idiopathic Urticaria appears in 972 FAERS reports alongside 2 co-occurring drug terms. The strongest observed disproportionality signal is OMALIZUMAB (PRR 333.4).

Important: FAERS is a spontaneous, voluntary, unverified reporting system. PRR and ROR identify reporting patterns for investigation; they are not incidence rates and do not establish causation.

Drug	Co-reports	PRR	ROR
Omalizumab	562	333.4	335.6
Dupilumab	299	18.7	18.8

Related reactions

Drug Ineffective
Off Label Use
Death
Nausea
Fatigue

Data source: openFDA FAERS. See the OpenPV methodology and limitations.