Stinging insect allergy: changing concepts

Area of Science:

• Allergy and Immunology
• Insect Sting Reactions
• Immunotherapy

Background:

• Hymenoptera stings pose significant health risks, necessitating improved diagnostic and therapeutic strategies.
• Current diagnostic methods for Hymenoptera sting allergies include skin tests and in vitro assays.

Purpose of the Study:

• To evaluate the diagnostic accuracy of skin tests using venom versus whole-body extract (WBE) compared to in vitro immunologic tests.
• To assess the current state of immunotherapy for Hymenoptera stings.

Main Methods:

• Comparison of skin prick tests using Hymenoptera venom with in vitro tests such as histamine release and radio-allergosorbent test (RAST).
• Comparison of skin tests using whole-body extract (WBE) with the same in vitro immunologic tests.

Main Results:

• Skin tests performed with Hymenoptera venom demonstrated good correlation with in vitro test results.
• Skin tests using whole-body extract (WBE) showed poor correlation with in vitro immunologic tests.
• Commercial immunotherapy is currently limited to WBE, with limited supporting immunologic data despite anecdotal evidence of benefit.

Conclusions:

• Venom skin testing is a reliable diagnostic tool for Hymenoptera sting allergies.
• WBE skin testing lacks correlation with in vitro tests, questioning its diagnostic utility.
• Current treatment focus should remain on sting prevention and medical management, as immunotherapy with WBE lacks strong immunologic support.