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AAS (Angioedema Activity Score)FeNO InterpretationMueller Grading (Venom Allergy)Total Nasal Symptom Score (TNSS)UAS7 (Urticaria Activity Score)
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Mueller Grading (Venom Allergy)

Mueller Grading System: Severity classification for Hymenoptera venom allergy and VIT indications.

Select Reaction Severity

Severity Grade

1

Local

Action Needed

Large local reaction. Standard wound care and oral antihistamines are typically sufficient. VIT is generally not indicated unless occupational risk or extreme anxiety is present.

Guidelines & Evidence

Verified

Last Review: 2026

When to Use

When to Use

Severity assessment of systemic allergic reactions to Hymenoptera (wasp, bee, hornet, ant) stings.
Initial assessment in the Emergency Department or Allergy clinic following a sting event.
To determine eligibility for Venom Immunotherapy (VIT).
Risk stratification for subsequent sting reactions.

Last Comprehensive Review: 2026