wounds

An itchy wound is more likely to be a scratched wound, coming into contact with long, ragged, filthy caveman fingernails, bringing in a boatload of germs. Is scratching an itchy wound the healthy thing to do? Or, if not, why wouldn't nature select the Itchy Wound gene out of the population...

If you scrape your hand and it bleeds, it scabs over. And it itches. WHY? Why damnit? Itchiness means that scabs can be scratched at while you're asleep, and they peel off, exposing the raw flesh, causing more bleeding, increasing the possibity of infection, and encouraging the growth of...