Head Lice Explained

If your scalp begins to itch, several factors could be at play. It might be due to dryness, an allergic reaction, or tiny parasites feeding on your blood. While this may sound alarming, it's really just an annoyance, similar to dry scalp or allergies. These tiny creatures are called head lice, and although they cause itching, they pose no serious threat. Known scientifically as Pediculus capitus, the condition is referred to as pediculiasis. It’s a common issue, and if you get them, there's no need to feel embarrassed.

There are many myths surrounding head lice. One common misconception is that they are linked to poor hygiene. However, it doesn’t matter how clean you are; lice can still infest you. Children, in particular, are more likely to catch and spread lice through close contact, sharing clothes, or other activities that bring them into close proximity [source: Perlstein]. Fortunately, head lice can't survive for long without a host, so it's rare to catch them from anything other than direct contact.

If you happen to get head lice, don't worry – the condition is easily treatable. With the right shampoo and some extra attention, you can clear up the infestation. The key is following the instructions carefully. There are also steps you can take to prevent lice in the first place, and even a few home remedies that might help. Lice have existed for centuries – they’ve even been found on the remains of ancient mummies [source: Pollack].

The first step in determining if you have lice is to recognize the symptoms. Keep reading to learn exactly what they are.

Head Lice Symptoms

You might have lice without even realizing it. Sometimes they cause itching, but not always. If there’s no itching, you may not even know you have them. Lice often cause a tickling sensation, though it’s more uncomfortable than funny. Whether it's itching or tickling, the usual reaction is scratching, which is when the physical symptoms begin to appear.

The itching from lice is actually an allergic reaction to their saliva [source: Mayo Clinic]. This can lead to red bumps on your scalp, and if you scratch too much, you might develop sores that can get infected, requiring antibiotics in some cases [source: Gavin]. However, this is rare. Most people with lice experience only mild irritation, and identifying the problem comes down to careful observation.

Lice may be small, but they're big enough to be visible. A simple way to check if you or someone else has lice is to inspect the scalp. There are three main things to look for: nits, nymphs, and lice. Nymphs (young lice) and adult lice are tricky to spot, as they're about the size of a sesame seed and move quickly. If you do see one, consider yourself lucky. What you're more likely to find are nits – the eggs of lice. These tiny eggs can be yellow, tan, or brown, and they attach to hair near the scalp. They hatch within one to two weeks, so if you find any, it's important to treat the scalp and hair right away [source: Gavin].

Preventing lice isn't always easy, but there are steps you can take to reduce the risk of getting them. Keep reading to find out what actions can help you avoid an infestation.

How to Prevent Head Lice

Children are particularly susceptible to lice because they're often more carefree with their interactions. It's common for kids to share items like hats or clothes, or even sleep in the same bed, which increases their exposure to lice. These behaviors are natural, but they also make children more vulnerable. Here's how you can help reduce the chances of your child (or yourself) getting lice.

Head-to-head contact is the most common way to get lice. It's important to talk to your child about avoiding this type of close interaction. While it's not always easy, explaining the discomfort that lice can cause may help make a difference. Also, sharing items that come into contact with hair should be avoided. This includes hats, scarves, barrettes, towels, and other commonly shared objects. Combs and brushes are especially important; between uses, they should be soaked in hot water to eliminate any lice that might still be attached [source: Centers for Disease Control].

If you know someone who has lice, avoid using any furniture they've recently come in contact with. The same goes for blankets and toys, particularly stuffed animals. Any item that has been in contact with the infected person should be washed. Use hot water and high heat when drying these items. For things that can't be washed, simply seal them in a plastic bag for a couple of weeks. Vacuuming can be done as a last resort, but the likelihood of getting lice from lice that have fallen off and settled on your carpet is very low [source: Centers for Disease Control].

Despite your best efforts, you or your child might still end up with lice. Keep reading to explore treatment options.

Head Lice Treatments

Eliminating lice is a straightforward process. Often, all it takes is a trip to your local drugstore, and most of the time, you won’t even need a doctor. There are several over-the-counter treatments available, so you just need to know what you're looking for. Medicated shampoos are among the most popular options. They're easy to use and tend to be quite effective. When selecting one, make sure to check for pyrethrin or permethrin in the ingredients. Two of the leading brands are Rid and Nix. No matter which product you choose, be sure to follow the instructions carefully for the best results [source: Mayo Clinic].

Sadly, even if you follow the instructions precisely, it may not always work. Lice in some regions have developed resistance to many common over-the-counter treatments. If your lice are particularly stubborn, a prescription may be needed. Malathion, lindane, and benzoyl alcohol lotion are three commonly prescribed treatments. Malathion is an insecticide that, when used in small doses, is safe for humans. It's applied to the hair and rubbed into the scalp, but be cautious around open flames, as it’s flammable. It should also be avoided if you're pregnant or breastfeeding. Lindane is available in various forms, including creams and shampoos. While it's generally safe, it has been linked to skin irritation and seizures in some cases. Benzoyl alcohol lotion is a newer treatment that’s effective and safe for adults, but it shouldn’t be used on infants under six months due to the risk of severe side effects like seizures, coma, or death [source: Mayo Clinic].

Regardless of which treatment you choose, there's still some work left to do after the fact. While most treatments effectively kill lice, they don't eliminate nits, and that means you could face another infestation in one to two weeks. Nits can be removed manually or with a special comb, which you can find at the drugstore. Be sure to repeat this final step until all signs of the lice have disappeared [source: Family Doctor].

There are also some home remedies that might help remove any remaining lice. Keep reading to discover more about them.

Natural Solutions for Head Lice

There’s a lot of controversy over whether home remedies can actually eliminate lice. What is known is that lice have been around for centuries, whereas medicated shampoos are a more recent invention. So, before commercial treatments were available, people either had to live with the lice or find alternative methods to remove them. While many modern medicated treatments are effective, they often contain pesticides, and misuse of these can lead to serious side effects. This is one of the main reasons some people prefer to avoid these options.

If you're interested in a pesticide-free home remedy, there are a few that have stood the test of time. White vinegar is one of the most widely used. It's important to note that this treatment doesn’t kill the lice or nits. Instead, it helps loosen the lice eggs from the hair, making them easier to remove. To use it, soak your hair in white vinegar, wrap a towel soaked in vinegar around your head, leave it on for about an hour, and then have someone remove the nits manually.

Oil-based treatments are another popular option. Some suggest covering your hair with mayonnaise or olive oil and then wrapping it with a shower cap or plastic wrap. If you try this method, blow-dry your hair while it’s still covered. The heat may be enough to kill the lice. Keep the covering on for about two hours, then use a special nit-removal comb to remove all the nits from your hair. Once you're done, shampoo your hair and comb it again. You can substitute Vaseline for mayonnaise or olive oil, but keep in mind that it’s much harder to remove from your hair, so proceed with caution.

Although these home remedies may help with removing nits, none have been proven to completely eradicate lice. The only other natural solution is to shave your hair off entirely. While this isn't a feasible option for everyone, those willing to go bald for a few weeks may find it effective. Just remember to dispose of the infested hair properly in a sealed plastic bag [source: WebMD].