Lice

So you're sitting there, reading the paper, when you notice your head's a bit itchy. Dry skin? Maybe. Irritated scalp? It's possible. Of course it could be something far more sinister... It could be every parent and school teacher's worst nightmare: Lice. Lice, the kind that is the bane of elementary schools everywhere, are a kind of wingless insect. They're members of the order Phthiraptera, which is classically broken into two groups, the chewing lice and the sucking lice - the latter is where our lovely head louse, Pediculus humanus, belongs. Why did I pick the measly little louse for my…