What Spiders Are Dangerous to Humans?
WouterThe venom of spiders can have a significant effect on human health. However, the effects are not always fatal. In fact, only seven people die every year from spider bites.
The most venomous species in the world include the Banana Spider, the Latrodectus (Black Widow) and the funnel web spider. These spiders are members of the mygalomorph family, which includes the tarantulas and arachnids. Some of these spiders also have antivenom.
A bite from a venomous spider causes pain and swelling at the site of the bite. The pain is usually felt within eight hours. It becomes more intense 12 to 36 hours after the bite.
The venom of some spiders is so toxic that it can cause severe skin lesions in humans. The spiders that are most dangerous are those that have venom that is neurotoxic, neurotoxin or alpha-latrotoxins. These toxins attack the cells in the body, causing pain, sweating and rapid heart beats.
In the United States, the brown recluse spider is one of the most venomous. The venom is very toxic and can lead to a painful lesion, breathing difficulties and nausea. If you are bitten by this spider, you should contact your physician immediately.
The redback spider is another venomous species. Its venom can cause a painful lesion and latrodectism, a condition in which the affected individual loses control of their limbs and breathing. In some cases, the lesions develop into necrotizing lesions, which are deep scars. These lesions take a long time to heal.
