Head lice parasitic insects that live on the human scalp and survive by drinking human blood makes the scalp itchy and an expert says that it can be one of the reasons behind sleepless nights. Anand Philip general physician NationWide - The Family Doctors says that lice move by crawling they cannot fly or jump so they spread by close head-to-head contact like when children sit together in a crowded classroom or school bus. Another way of transmitting head lice is by using the comb or hair band or scrunchie of someone who has lice. 'Lice do not cause any
