A spider bite can cause immediate pain and swelling at the site of the bite. The severity can vary depending on the species of spider and individual reactions.
The area around the spider bite may become red, inflamed, and tender. It is a common response of the body's immune system to the venom injected by the spider.
Spider bites can often result in itching or the development of a rash. Some people may experience hives, blisters, or other allergic reactions to the venom.
Spider bites can cause systemic effects. Fever, chills, headache, disorientation, muscle discomfort, and nausea may occur. Such symptoms require medical treatment.
Spider bites are harmful. Tissue necrosis, muscle pain, cramping, and difficulties breathing may occur. Bites need emergency attention.