Please call 911 immediately if you are having chest pain, difficulty breathing, severe bleeding, sudden weakness or numbness, or if you think you have a medical emergency.
For more information about severe allergic reaction, see Anaphylaxis .
For a jellyfish sting in non-tropical waters:
For a sting in tropical waters -- especially from box jellyfish:
For stings not from a box jellyfish:
For less severe sting:
For a severe reaction:
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