A head check is an easy way to discover if your family has head lice. Many people do not itch even with an active case of head lice.
A female louse only has to mate one time at the onset of adulthood to begin laying eggs…about 175 eggs (conservatively) in her lifespan. After a female reaches adulthood she will live about 17-20 more days: From birth to death 30-35 days.