The Box Jellyfish is found in the Northern waters of Australia. It has a ferocious reputation having been responsible for a number of deaths in Australia with the majority of recent deaths in children.
Ticks are arachnids that obtain blood for nourishment. There are over 70 species in Australia but only three that cause paralysis: Ixodes holocyclus (almost always the culprit). Ixodes cornuatus and Ixodes hirsti.
White-tailed Spiders are fund throughout Australia and wrongfully been accused of causing necrotic lesions on the skin. We now how evidence that this is not the case and a painful bite with red mark is the typical presentation.
Funnel-web spiders comprise of 40 species capable of causing a lethal envenomation. Unfortunately they look very similar to other BIG BLAKC spiders such as the trap door and mouse spiders. Therefore you need an approach to the big black spider bite in areas where the funnel-web lives.
Redback Spider bites are the most common envenoming in Australia. Venom is from the latrodectus genus which is abundant in different countries around the world. Some of which use antivenom and some do not. This is a hot debated topic in toxicology and will shall explain further in this post.
Irukandji Syndrome - originally a mystery was solved by some self experimentation of Dr Jack Barnes, his nine-year old son and local surf lifesaver. He proved that the thumbnail sized carybdeid (or four tentacled box jellyfish) could cause Irukandji syndrome but placing it on all three of them.
Blue-Ringed Octopus bites usually occur if you are hanging around Bond villains or you pick these up and play with them, the venom comes from a beak under the body of the octopus and not the tentacles. Scarily you will will become paralysed soon after the bite but will be fully aware like a locked in syndrome.
Bluebottle Jellyfish are not actually a single organism but are made up of zooids. These bluebottles cause thousands of stings each year on Australian beaches and hot water usually provides relief. Major systemic envenoming does not occur (unlike other Physalia stings in other parts of the world).
Sea snake envenomation is rare as they are infrequently aggressive and have a smaller apparatus to bite. The most common scenario is a bite from handling, usually when trying to remove them from fishing nets. Classically they cause a descending symmetrical paralysis and myotoxicity.
Australian Scorpions - bizarrely are less dangerous then those found elsewhere in the world. Current evidence would suggest they usually cause temporary pain and minor systemic symptoms only. Interestingly the smaller the scorpion the more painful the bite is.
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