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Spider bites: First aid

Black widow spiders

You can usually identify a black widow spider by the red hourglass marking on its belly. In the United States, this spider is more common in the South. It's also found in Europe.

Symptoms of a black widow spider bite can include:

  • Irritated skin with pain and swelling.
  • Severe stomach pain or cramping.
  • Upset stomach, vomiting, headache, shaking or sweating.