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Zoology/leech saliva - anaesthetic

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Helpful wrote at 2010-04-03 23:48:55
Actually, there is no anesthetic at all in a leeches bite, and most leech bites do hurt, and some actually hurt significantly. I have no idea why they don't hurt more, but there is NO anesthetic of any type in their bite.


Kevan wrote at 2015-02-01 13:55:43
I think the answer to the leech anesthetic question is that biosynthesis of anesthetic substances occurs in the host triggered by the injected biochemicals from the leech.


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Walter Hintz

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