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.
But it could be direct contact with hair, a brush, a car seat, a stuffed animal, or the sofa. Usually the couple of lice that cause the infestations don't cause many symptoms themselves, but they begin to lay eggs -- day! Each crop of eggs hatches about six to 10 days later. Some people can have lice for months before they start to itch, because the itching is an allergic reaction to the lice stool.