Can you tell a spider by how it bites you?

How can you tell the difference between mosquito bites and spider bites?

• I have a row of bites on my leg from my vacation, and I don't know whether they are mosquito bites or spider bites. How can I tell the difference between the two? I'm a bit ...show more

• Answer:

  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 also cause a potentially fatal allergic reaction known as anaphylactic shock. Its symptoms 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 Your Doctor 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.