Spider Bite Symptoms

Spider Bite Symptoms: What Are the Symptoms of Insect and Spider Bites?

Most insect bites produce only minor irritation, with symptoms such as:

Swelling at the site of the bite
Itching or burning
Local numbness or tingling

Bites of poisonous spiders and scorpions may produce these symptoms:

Intense pain at the site of the wound
Stiffness or joint pain
Muscle spasms
Abdominal pain, nausea or vomiting
Fever or chills
Difficulty breathing or swallowing
A spreading, ulcerated wound or tissue death
Dizziness, impaired speech or convulsions

An insect or spider bite can rarely cause a potentially fatal allergic reaction known as anaphylactic shock. Symptoms can include:

Rapid swelling of the lips, tongue, throat, or around the eyes
Difficulty breathing
Wheezing or hoarseness
Severe itching, cramping, or numbness
Dizziness
A reddish rash or hives
Stomach cramps
Loss of consciousness

Call 911 About an Insect or Spider Bite If:

You think you have been bitten by a poisonous spider or scorpion.
You experience any of the symptoms of anaphylactic shock described above. This is a severe, possibly life-threatening condition.

Call 911 or your emergency number immediately.