In rare cases, people who are allergic to asian giant hornet's sting may experience anaphylaxis, a serious and potentially life-threatening condition. Symptoms include difficulty in breathing, swollen face, lips or throat, dizziness or fainting and a rapid pulse. It's important to note that the severity of the symptoms can vary depending on the individual's sensitivity and the number of bites or stings received. If you are concerned about a specific bite or sting or if symptoms persist or worsen, it is recommended to consult a healthcare professional for proper evaluation and treatment.