Head Lice: A Guide for Parents

September 01,2025 | Education & School Readiness
Parent checking a child’s hair for head lice at home, illustrating care and prevention.

Head lice are a common issue for families, especially those with children in elementary school. While anyone can get them, lice tend to spread more easily among younger kids because they’re more likely to have head-to-head contact with friends or share items like hats, brushes, or hair accessories. Although lice can cause stress, itching, and discomfort, it’s important to remember that they are not dangerous and can be treated effectively at home. Knowing how to identify lice, how to treat them, and which common myths to ignore can help parents manage the problem with confidence.

What Are Head Lice and Nits?

Head lice are tiny, wingless insects about the size of a sesame seed. They are usually gray, brown, or pale in color and survive by feeding on small amounts of blood from the scalp. Without a host, lice cannot survive longer than a day. Their eggs are called nits, and they are oval-shaped and usually yellow or white. Nits are attached firmly to hair shafts near the scalp and hatch within 7 to 12 days. An adult louse can live for around 28 days. Because lice spread mainly through direct head-to-head contact, children are the most common group affected. They can also spread through shared items like combs, helmets, or hats, but lice do not jump or fly. They are crawling insects only.

Signs of Head Lice and How to Check

Persistent scalp itching is often the first sign of head lice. This irritation comes from an allergic reaction to the lice’s saliva. Itching is often most noticeable behind the ears and at the base of the neck. However, keep in mind that the itching may not appear until four to six weeks after lice are first present. To check for lice, use bright lighting and part the hair in small sections, and then carefully examine the scalp. Because lice move quickly, you may not always see the insects themselves, so checking for nits is key. Unlike dandruff or other scalp debris, nits cling tightly to the hair and cannot be brushed away easily.

Treating Head Lice

Once you’ve confirmed lice, treatment should begin right away. The most reliable method is careful combing, sometimes used in combination with medicated treatments. Some home remedies, like applying mayonnaise, butter, olive oil, or margarine, are often suggested but have no proven effectiveness. Over-the-counter treatments may also fail in some cases because lice have grown resistant to certain ingredients. For this reason, it’s best to consult your pediatrician about prescription-strength options.

When using a medicated treatment, apply it to your child rather than letting them handle it themselves. Always follow package instructions closely. Rinse the product out over a sink with warm water, and consult your pediatrician before repeating the treatment. After applying medication, use a fine-tooth comb to remove any remaining lice and nits. Combing should be done every couple of days for 2–3 weeks, or as long as the instructions recommend, to ensure all lice are gone.  The most effective method is combing lice out and while this can be done at home, there are also multiple salons that specialize in this and can do it for you to effectively remove all lice and nits which will stop the infestation right away.

Cleaning and Preventing Re-infestation

To avoid lice returning, wash any bedding, clothing, hats, or towels your child used within two days before treatment in hot water. Items that can’t be washed should either be dry-cleaned or sealed in a plastic bag for two weeks. It’s also a good idea to check all household members for lice to prevent re-infestation.

 For any questions or concerns about head lice, please call our office. 



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