Untreated, the head lice will continue to multiply on the head of their host, biting into the skin to suck the blood. The saliva that head lice release when they bite into the scalp causes an allergic reaction that produces itchy welts. As the infested individual repeatedly scratches these welts, they can become open sores susceptible to infection.
The longer the head lice persists, the greater the chance of spreading it to family members and classmates. Save your child this pain and distress and protect against the spread of head lice by having head lice treated promptly.