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10-Jun-2016
Spider venoms can be grouped into two broad categories: necrotic, and neurotoxic. Necrotic, or cytotoxic venoms, are those which cause cell and tissue damage after envenomation. This can lead to the appearance of inflammation, lesions, and blisters. Neurotoxic venoms, on the other hand, exert their effects on the nervous system, and interfere with signalling between neurons. In extreme cases, these can lead to respiratory and cardiac arrest. Note that some spider venoms can actually contain both necrotic and neurotoxic components.
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