Head Lice Size and Age

Head lice are small insects that live on human scalps and hair. They hatch from their eggs in seven to eleven days and begin reproducing immediately. They can live up to 30 days on the head of their host and must feed several times a day. When they leave the host, they die within two days.

The size of the adult lice is similar to that of a sesame seed, ranging from two to three millimeters. They feed on the blood of the host and lay eggs in the hair shaft. The nits are closest to the scalp and most commonly on the back of the head. While some children experience itchy scalps after being infected, many others do not exhibit any symptoms.

Although head lice do not usually cause health issues, they can cause a rash on the scalp or itch in the neck. It is very embarrassing for a child to have lice. This may lead parents to not tell their child’s school or friends about the infestation. This can be a frustrating situation for parents and children, and it can spread throughout the family.

If you notice that your child has head lice, you can try home treatment. It is important to start treatment before the next day of school. A great website that has more information about treating head lice includes Pregnancy, Birth and Baby. If you are concerned that your child may have head lice, Healthdirect can help you find a treatment.