Why leech's biten feel itchy..?

Question

why our skin feel itchy once we had been biten by leech..

Answer 1

Though all species of leeches feed on blood, not all species can bite; 90% of them solely feed off decomposing bodies and open wounds of amphibians, reptiles, waterfowl, fish, and other mammals (including, but not limited to, humans). A leech attaches itself when it bites, and it will stay attached until it has had its fill of blood. Due to an anticoagulant (hirudin) that leeches secrete, bites may bleed more than a normal wound after the leech is removed. The effect of the anticoagulant will wear off several hours after the leech is removed and the wound is cleaned.

Leeches normally carry parasites in their digestive tract which cannot survive in humans and do not pose a threat. However, bacteria, viruses, and parasites from previous blood sources can survive within a leech for months, and may be retransmitted to humans.

However, wounds that we get usually start to itch while they are healing.  It's just the sensation that one feels as the body repais itsself... a perfectly natural sensation.

Answer 2

thats because its an open wound, and your wound is healing. thats what i think, anyway.