We Have Been Treating Jellyfish Stings All Wrong

We Have Been Treating Jellyfish Stings All Wrong

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The treatment of cold packs, seawater, and wee? All make it worse. THIS is how you treat it, according to science.

This is a Lion’s mane jellyfish in Dingle Harbour, Ireland.     Photo credit: Nuala Moore

 

New research from NUI Galway has identified the best way to treat a sting from the lion’s mane jellyfish (Cyanea capillata). The lion’s mane jellyfish is the most problematic jellyfish in Ireland with many bathers being badly stung each year. With over a 1,000 tentacles that can stretch up to four or five metres in length, a bad sting from a lion’s mane jellyfish can cause severe local reactions and extreme pain.

The research, published in the international journal Toxins shows that the best first aid for a lions mane sting is to rinse with vinegar (or the commercial product Sting No More Spray) to remove tentacles, and then immerse in 45°C (113°F) hot water (or apply a heat pack) for 40 minutes. The results mirror a recent NUI Galway and University of Hawaii study on stings from the Portuguese man o’ war and previous work on box jellyfish stings.

Dr Tom Doyle, Lecturer in Zoology from the School of Natural Sciences at NUI Galway was lead author of the study. “What most people don’t understand is that these jellyfish – the lion’s mane, the Portuguese man o’ war and a box jellyfish, are as different from each other as a dog and a snake.

“Therefore when developing first aid treatment for a jellyfish sting it is very important to test different treatments on these very different types of jellyfish. Now that we have shown that vinegar and hot water work on these three jellyfish species, it will be much easier to standardise and simplify first aid for jellyfish stings where many different types of jellyfish occur.”

In Ireland, current best-practices recommend using sea water and cold packs, which is not the correct action for treating these jellyfish stings as it induces significant increases in venom delivery, while rinsing with vinegar or Sting No More® Spray did not.

Dr Doyle now hopes to bring together members of the Jellyfish Advisory Group in Ireland to discuss his latest findings. However, it is important to remember that most jellyfish stings in Ireland and the UK are no worse than a nettle sting. Anyway, stop peeing on those stings! It doesn’t work! And it is gross!

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