A mild allergic reaction may cause one or more of these symptoms at the site of the sting:

• Pain;
• Redness;
• Pimple-like spots;
• Mild to moderate swelling;
• Warmth;
• Itching.

Severe allergic reactions (also called anaphylactic reactions) are not that common. But when they happen, they're emergencies.

Symptoms can include:

• Troubled breathing;
• Hives that appear as a red, itchy rash and spread to areas beyond the sting;
• Swelling of the face, throat, or any part of the mouth or tongue;
• Wheezing or trouble swallowing;
• Restlessness and anxiety;
• Rapid pulse;
• Dizziness or a sharp drop in blood pressure;
• Stomach cramps, nausea, or diarrhea.

Get emergency treatment as soon as possible.