Ichneumon Wasp Sting: Symptoms, Allergy Risk & First Aid

Ichneumon wasp stings are generally mild for humans. Their venom is adapted to paralyze insect hosts; low potency in mammals. Typical reaction: brief localized pain, minor swelling/itching resolving in days.

Exceptions

• Megalyrinae subfamily: Some species inflict notably painful defensive stings.
• Allergic individuals: Risk of systemic reactions (angioedema, anaphylaxis) as with any Hymenoptera sting.

First Aid

• Clean site; cold compress for pain/swelling.
• OTC antihistamine/analgesic if needed.
• Seek emergency care for difficulty breathing, widespread hives, throat swelling, dizziness—signs of anaphylaxis.

Any significant reaction warrants medical evaluation.