Insect sting allergy can be severe, leading to a systemic reaction called anaphylaxis. In addition, after being stung, some individuals experience other symptoms. They include:
Anaphyalaxis
For a small number of people with severe venom allergy, stings may be life-threatening. Severe allergic reactions to insect stings can involve many body organs and may develop rapidly. This reaction is called anaphylaxis. Symptoms of anaphylaxis may include itching and hives over large areas of the body, swelling in the throat or tongue, difficulty breathing, dizziness, stomach cramps, nausea or diarrhea. In severe cases, a rapid fall in blood pressure may result in shock and loss of consciousness. Anaphylaxis is a medical emergency, and may be fatal.
Toxic reaction
A toxic reaction can cause symptoms similar to those of an allergic reaction, including nausea, fever, swelling at the site of the sting, fainting, seizures, shock, and even death. A toxic reaction occurs when the insect venom acts like a poison in the body and may result after only one sting, but it usually takes many stings from insects that are not normally considered poisonous.
Serum sickness
Serum sickness is an unusual reaction to a foreign substance in the body that can cause symptoms hours or days after the sting. Symptoms include fever, joint pain, other flulike symptoms, and sometimes hives.
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