leech bite

why dont we feel any pain if leech sucks blood from our body without being noticed by us (even if blood flows on the skin), and start feel pain right after we see it?

RadhaKrishna Level 1 Asked on February 27, 2016 in Parasitology.
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1 Answer(s)

When they are sucking blood they release an anaesthetic, which is the reason why you don’t feel the leeches when they bite. They then use suction and mucus to stay on their host. Once they open up a bite wound they secrete an anti-clotting enzyme called Hirudin into the bloodstream so that blood will keep flowing.

So, it’s not you feel pain when you see it, but when you remove it.

 

Source: http://www.leechestherapy.com/about-leeches

Roshan Nepal Level 1 Answered on March 7, 2016.
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