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Table 1 Classification of Allergic and Pseudoallergic Reactions Induced by Nonsteroidal Anti-Inflammatory Drugs

From: Clinical Management of Adult Patients with a History of Nonsteroidal Anti-Inflammatory Drug-Induced Urticaria/Angioedema: Update

 

Type of Allergic/Pseudoallergic Reactions

Underlying Disorder

Cross-Reaction/Reaction on First Exposure

1

Asthma and rhinitis exacerbated by NSAID

Asthma/sinusitis/polyposis

Yes

2

Urticaria/angioedema exacerbated by NSAID

Chronic urticaria

Yes

3

Urticaria/angioedema from single NSAID

None

No

4

Acute urticaria/angioedema from multiple NSAIDs

None

Yes

5

Anaphylaxis from single NSAID

None

No

6

Blended respiratory/cutaneous reaction from one or more NSAIDs

Asthma/rhinitis/polyposis or none

Yes or No

  1. NSAID = nonsteroidal anti-inflammatory drug.