FAQ About Lice

Through head-to-head contact, children are the most susceptible to lice.

According to the CDC, 6 to 12 million children, ages 3 to 11, are infested with head lice each year in the United States. Even with such high infestation rates, many people have questions regarding head lice.

Who Gets Head Lice and How?

According to the Centers for Disease Control and Prevention (CDC), preschool and school-aged children are those who are most commonly affected by head lice. Head lice are most often spread by head-to-head contact with an infested individual. It is important to note that cleanliness and personal hygiene have nothing to do with who gets head lice.

Can Lice Spread Disease?

The CDC states that head lice are not known to cause any sort of disease and shouldn't be considered a health hazard. However, persistent scratching of the head can cause breakage in the skin, opening it to secondary infections.

How Long Can Lice Live Without a Host?

Once separated from a human host, adult head lice live for only about a day. Nymphs (young lice) live for mere hours and nits (lice eggs) die within a week and cannot hatch without the warmth provided by a human head.

How Do I Treat Lice?

Treat anyone affected with over-the-counter or prescription medication. Because most lice medications do not kill eggs, re-treatment is often necessary. Directions for treatment and re-treatment are included with lice medications. Wash and dry clothing, bedding and towels using how water and high heat. Soak combs and brushes in hot water (at least 130 degrees Fahrenheit) for five to 10 minutes. Vacuum floors and furniture.

References

• CDC: Head Lice Fact Sheet
• CDC: Head Lice Treatment
• CDC: Head Lice FAQs