A variety of control measures should be implemented immediately, because person-to-person contact can result in rapid spread of head lice to others in the school, family, and workplace. The earlier a head-lice infestation is detected, the faster it is to solve the problem.
It is important to concurrently take steps to eradicate head lice from the environment and the person. A stubborn cycle of repeated infestations can result if such control efforts are not made at the same time.