Bites and stings from insects (bees, wasps, yellow jackets) and spiders usually cause pain, swelling, redness, and itching at the site of the sting or bite. In some people, especially children, the redness and swelling may be worse and last up to a few days.
A few people have severe reactions to the toxin injected by the insect or spider. A toxic reaction occurs when insect or spider venom acts like a poison in the body. This type of reaction can occur from one bite or sting from a highly toxic insect or spider, or from multiple bites or stings from insects or spiders not normally considered poisonous.
A fever -- also known as a high fever or a high temperature -- is not by itself an illness. It's usually a symptom of an underlying condition, most often an infection.
Fever is usually associated with physical discomfort, and most people feel better when a fever is treated. But depending on your age, physical condition, and the underlying cause of your fever, you may or may not require medical treatment for the fever alone. Many experts believe that fever is a natural bodily defense against infection...
Symptoms of a toxic reaction vary depending on the insect or spider, the toxicity of the venom, and the amount of venom injected. Most often, symptoms improve or go away within 48 hours. Although hives and difficulty breathing may occur in an allergic reaction, these symptoms will not occur in a toxic reaction. It is possible to have both a toxic reaction and an allergic reaction at the same time.
A toxic reaction may require immediate medical care or may lead to death. Signs and symptoms of a toxic reaction may include: