In rare and extreme cases, certain individuals can experience anaphylaxis, a severe allergic reaction that includes difficulty in breathing, hives, nausea, and rapid heartbeat. 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.