What Are the Most Common Symptoms of Spider Bite Reactions?

It belongs to Theridiidae and Latrodectus. The species are distributed around the world with different names. Generally, spiders are not very toxic and can cause local pain, inflammation or necrosis after biting. The most toxic ones are cave tarantulas (also known as black widows, hourglass spiders, and deadly red spotted spiders). Female spiders are more toxic than male spiders. Poisoning mechanism: The spider has a pair of keratin needles, secretes a small amount of venom, contains neurotoxins and tissue-dissolving toxins to cause poisoning. Neurotoxin is a neurotoxic protein, which is very toxic and can be combined with neuromuscular cell process binding membranes to stimulate the central, peripheral and autonomic nerves; dissolving toxins can cause vasculitis and tissue necrosis, etc. ^[1] .

Poison spider

(Ceratosaurididae)

Poison spiders are commonly found near garbage dumps and homes. Kurakavi spiders live in logs, under stones, and woodlands and fields. In the southeastern United States, kurakavi spiders live on ground trees or shrubs; poisonous spiders live on the ground.

Poison spiders are distributed in warm regions of the world;

The poisonous spider has neurogenic protein poisoning, it is not painful after biting, it causes local paleness or redness, and urticaria appears in the human body; in severe cases, tissue necrosis, dizziness, headache, nausea, vomiting, weakness, fever, delirium, breathing Increases systemic symptoms such as quickening and sweating. In severe cases, collapsed and died. Children responded more strongly. The poisonous spider should be bandaged near the wound immediately after being bitten. Use 0.25% procaine as a wrap around the wound or near the limbs. Oral and topical snake medicine, injection of adrenocortical hormone, intravenous injection of 10% calcium gluconate, Rehydration. ^[3]

Poisonous spider brazilian spider

In 2010, the Brazilian roaming spider was included in the Guinness Book of Records as the most toxic spider in the world. This spider is also aggressive, and it is clear that it is more likely to have a bite. Its venom possesses a potent neurotoxin

Brazilian roaming spider

Can cause breathing problems, followed by suffocation and death. Another effect of its venom is an abnormal erection, which means it will erect for a long time, hours to days. Its venom can also cause permanent impotence. However, this venom is being studied to cure sexual dysfunction. It only needs to inject 6 micrograms of venom to kill a 20-gram mouse, and its total weight of venom reaches 1.069 mg. Even after antisera were used for treatment, humans were killed by bites. In general, spider bites are non-toxic, and the pain of these wounds will not exceed 1 hour. However, toxic wound pain will last up to 24 hours. The description in Wikipedia goes like this: "Spider venom has two consequences, either causing neurotoxicity (attacks the nervous system) or causing gangrene (attacks to the tissues surrounding the wound and in some cases to vital organs and systems). ). "It sounds scary, but there are enough scientific facts, so check your shoes before you wear them.

Poison Spider Black Widow

Black widow

Who among us hasn't heard of Black Widow, this spider is not only very toxic but also eats its spouse after mating. Its bite can cause a symptom called poisonous spider poisoning, which can cause severe muscle cramps, and sometimes causes temporary spinal or cerebral palsy, but rarely causes death. All black widow species have a bright red hourglass pattern on the abdomen, and some also have other red logos on their bodies, which is a warning for those animals that see them. Before the advent of antisera, these bite incidents had a mortality rate of 5%. Its half lethal dose is 0.002 mg / kg, which means that it does not need too much venom to kill prey.

Poisonous spider rat spider

Rat spider

Rat spiders are found in Australia. Female rat spiders are black. Male rat spiders have red heads and red mouthparts (other species also have red heads but are bright red). Despite their serious-sounding names, these spiders are considered as dangerous as funnel web spiders. In any case, bites rarely occur, perhaps because rat spiders usually "dry bite," meaning their venom is not released. The venom itself is similar to the funnel web spider, and the same anti-venom serum can be used to treat bite from rat spiders. Its venom has the potential to kill humans, and no deaths have occurred so far. This seems to be the result of rapid emergency treatment and its habit of not releasing venom.

Poisonous spider redback spider

Redback spiders are of the same race as Black Widows, and are very toxic. They are found in Australia, with noticeable red stripes on their backs, and stripes or hourglass graphics on their abdomen. Before the advent of antisera, 14 people died from bite by redback spiders. Most people have less severe symptoms, ranging from local skin infections to other symptoms such as enlarged lymph nodes, headaches, nausea, and tremors. More severe symptoms include spasms, coma, and respiratory failure, but fortunately these symptoms rarely occur. We can easily understand why these little creatures have such a notoriety.

Six-eyed Sand Spider

Six-eyed sand spider

Six-eyed sand spider is another of the most poisonous spiders in the world, but fortunately it lives in inaccessible areas and is not aggressive. According to a study, it was found in Africa and South Asia, and is cousinous with hermit brown spiders, but it is many times more toxic than hermit brown spiders. No antisera can cure its bite. In addition to local gangrene, it can also lead to disseminated intravascular coagulation, which can lead to clots penetrating the skin and bleeding and skin bleeding, and can cause death.

Poisonous spider

Chinese bird spider

The Chinese bird spider is a huge spider with a leg span of 8 inches. Much research has been done on the venom of this giant spider because it is an aggressive organism and can kill small mammals with very small doses. The spider was found in Southeast Asia, and at least one infant died. Only a dose of 0.70 mg can lead to 50% mortality in experimental mice.

Poisonous spider sydney funnel web spider

Sydney funnel web spider

The Sydney funnel web spider is one of the most poisonous spider species on the planet. They have huge fangs and unlike the dry bites of other poisonous spiders, they inject all the venom. They are also more likely to attack than escape, and will bite several times in a row. How despicable! The venom of the Sydney Funnel Web Spider is very dangerous for all primates, including us, of course. A bite can cause a child to die within 15 minutes, but that was just before the advent of anti-serum. The funnel web spider has a half lethal dose of only 0.16 mg / kg.

Poison spider reclusive brown spider

Hermit brown spider

The hermit brown spider and its sister species, the Chilean hermit spider, are very poisonous spiders. But the good thing for humans is that they all have tiny fangs and don't easily pierce clothing. They are also known as hermits, which means that there are not many bite incidents due to their hidden life habits. Some of the most dangerous symptoms after their bite are bone marrow, where tissue death occurs at the site of the bite, and the wound may expand to 10 inches and begin to decay. 14% of people who develop this symptom are systemic, which means that a bite can cause a systemic infection. Chilean spiders are more toxic, and some systemic infections can even cause kidney failure. A study in Chile showed that deaths account for 3% -4% of all bite incidents, and its half-lethal dose is 1.45mg / kg, so it is clear that it is a spider that needs to be avoided.

Indian gorgeous rainforest bird trap

This bird spider is entirely a poisonous spider, and reported cases of coma caused by bites in the tropics. This spider is not known for its toxicity. It is well known that almost all tarantulas have huge fangs, and most of them are harmless. However, bites in this case can cause serious injuries. Needless to say severe pain.

Poisonous spider yellow sac spider

Yellow sac spider

The beautiful yellow sac spider is the least toxic one on our list, but it is still very toxic. Yellow sac spiders can create brushed webs that you can remove with a broom or vacuum cleaner, but fortunately they rarely approach and bite humans. One of the dangers of their bites is a close connection with methicillin-resistant Staphylococcus aureus (MRSA) infection, which is very serious. Although their bites can cause osteomyelitis or tissue necrosis, the extent of their toxicity remains controversial.