APA Citation Pamphlet, Brochure, or Bulletin Publication Manual of the American Psychological Association, 6th Ed., p.187-192, 6.31-6.32 Pamphlet Harvey, E. (1999). 180 Ways to walk the customer service talk. [Pamphlet].
Although any part of the scalp may be colonized, lice favor the nape of the neck and the area behind the ears, where the eggs are usually laid. Head lice are repelled by light and will move towards shadows or dark-colored objects in their vicinity.
Lice can live up to a month and can lay up to 10 eggs a day. An egg takes 7-10 days to hatch. A nymph is a baby louse. A nymph takes 7-10 days to mature into an adult louse. Only adults can lay eggs. The dark brown eggs are the newly laid eggs.