It may take as long as two to three weeks or longer for a person to notice the intense itching associated with this infestation.

What time of year is lice?

Head-lice incidence peaks shortly after school starts, particularly among younger children. Fall and winter are prime seasons not only for the flu bug, but for another bug as well—the head louse.

What season is most common for lice?

One can say that summer and fall are peak lice seasons. There tend to surge in lice cases at these two times of the year. This is mainly due to human behavior, not the natural life cycle of the insects. Lice are passed among children when they are at camp, playdates, and school as lice move from head to head.