What are the different types of spider bites?ĭifferent categories of spider bites have been identified according to the spider species involved in the process. Seizures, convulsions, and unconsciousness in extreme cases.Painful erection of genitals in male (Priapism).Numbness or occasional tingling around the mouth.An extreme headache (occurs if the venom attacks the Central Nervous System).Excess secretion of sticky saliva (when venom attacks the lymph nodes).Swollen tender glands in the armpit or groin of the infected limb.Piloerection (continues till few minutes of bite).Local erythema (inflammation due to dilatation of blood vessels).Diaphoresis (local and regional sweating).Pain spreading from the site of injury to other regions such as lymph nodes, proximal limb or trunk.Piercing pain and burning sensation which increases in magnitude within few hours of the spider bite.Pinprick sensation at the site of bite (Paraesthesia).Formation of blisters, pustules or large lesions that spread from the site of injury to other parts of the body.The following symptoms are commonly observed within minutes to hours of infection with the spider venom. Spider bite symptoms vary according to the venom type of the spider species involved. The injected venom gets transferred via the bloodstream to different organs of the body and causes severe clinical complications due to impaired functioning of the vital organs. In the initial stage, the symptoms are less severe, but within few hours the rashes spread to other parts of the body as well. As discussed earlier, the IgE protein is activated and releases Cytokines and Histamine which are harmful to the body. Spider bites skin#When the spider venom is injected into the human body at the site of injury, inflammation and rashes appear on the skin (at the spot of injection) as an immune response (allergic response) of the body to the injected poison. Care must be taken to protect small children from spider bites since the effects have been found to be fatal in several cases.Īs the name suggests, spider bites are caused by different varieties of venomous spiders like Redback spider, Funnel-web spider, Tarantula, Wolf spider, Black Widow spider etc. Till date, three distinct syndromes arising from spider bites have been identified – loxoscelism, latrodectism and funnel web spider syndrome. The symptoms manifested are primarily due to the activation of Immunoglobulin protein (IgE) within the human body that releases harmful chemicals such as Cytokines and Histamines. More than 40,000 species of spiders exist in the world and most of them cause detrimental effects after injection of the venom, especially after the venom enters the bloodstream and gets carried to different organs of the body. Few of them cause mild short-termed effects, while few species cause severe clinical complications and even death.Ī spider bite is defined as a collection of symptoms that are manifested after a person is bitten by a spider and is infected with the spider venom that enters the body at the site of injury. Different varieties of spiders are available in almost all countries. Among different kinds of insect bites, the most life-threatening symptoms are caused by “spider bites”. Insect bite incidences have always been common in tropical, subtropical, humid and temperate regions of the world since these regions have optimum weather and climatic conditions favorable for the growth and propagation of different kinds of insects.
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