Hot water ‘better than urine at treating jellyfish stings’

“The principle behind the use of lidocaine is that it acts as a local
anaesthetic (and) appears to inhibit the further discharge of nematocysts
remaining on the skin,” Mr Ward said.

Nematocysts are the “venom sacs” jellyfish leave behind as a further
insult after they sting. It’s important to get those off the skin, because
they can continue to release venom.

Simple hot water might help by “denaturing” and inactivating the
venom, Ward said. But hot water might not be available at the beach, and not
everybody carries lidocaine with them.

In that case, removing the venom sacs from the skin and washing the are with
saltwater might help, though the sacs must be handled with care. The edge of
a credit card, or something similar, might work well.

“The idea is to avoid crushing the sac and spreading venom, which wiping
off with a towel could do,” he said.

Vinegar does help with some species, such as bluebottles or Portuguese
man-of-wars, which are mainly found off the coast of Florida and in the Gulf
of Mexico.

But vinegar may actually worsen the pain of stings from most North American
jellyfish, as well as causing any remaining venom sacs to discharge, Ward
said.

“Hot water and lidocaine appear more widely beneficial,” he wrote.

Source: agencies

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