During the spring of one year he was walking tipsily along the street when he saw, in the sunlight at the base of a wall, Whiskers Wang(T26) stripped to the waist catching lice.
But which know, that fellow suffers from ringworm, the mustache that goes on transplanting itchs confoundedly all the day, kill so that his blood scratchs piece.
In fact, the people with OCD know that their behavior is irrational but it's like an itch — just because you know in your head that you shouldn't scratch it doesn't make it any less itchy.
Tickling is a type of itch almost, and we found that when people have done functional neuroimaging studies of the brain while being tickled that two areas light up.
The origins of that itch you're feeling right now extend way back on the evolutionary tree, and we've only scratched the surface of knowing how it all works.