Head lice are not a health hazard. It is a sign of poor hygiene or a cause of an ailment. They are quite prevalent among preschool and elementary school-age children and can spread to the rest of the people in a household. Adult head lice are about one-eighth of an inch long, the size of a sesame seed, and they live up to a month. Head lice can live around 1 to 2 days away from the host. Female head lice are bigger and can lay approximately eight...
