This is interesting from the viewpoint of writing Fantasy involving primitive societies. I often read about pre-technology societies that seem clean and noble, but it would be almost certain that they would have lice.

Clothes=Lice

I remember reading an account of Thomas Becket’s funeral where it was described how the lice fled from his body as it cooled. Thomas Becket was (in 1170) one of the most learned and civilized men in Europe.

Yahoo! News – ‘Lousy’ Study Shows Clothing 70,000 Years Old: “‘Lousy’ Study Shows Clothing 70,000 Years Old”