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Can you treat for lice too much?

Lice infestation can be a real nightmare, and the mere thought of these creepy crawlies can send chills down the spine of anyone. You might be tempted to go overboard with lice treatment, applying too much medication on your head to get rid of them quickly. But, is that really necessary? Can you treat for lice too much? In this blog post, we will address this question and provide useful information on how to handle lice infestations.

Understanding Head Lice Infestations

Head lice infestations are common among kids, and it is estimated that anywhere between 6 to 12 million people get head lice every year in the United States alone. Lice are parasitic insects that live on the scalp and feed on blood. They spread through head-to-head contact, or by sharing clothing, hairbrushes, and other personal items.

Lice infestations are not associated with poor hygiene or cleanliness, and anyone can get them. The symptoms of head lice infestations include itching, red bumps on the scalp, and the presence of lice and nits (lice eggs) in the hair shafts.

Lice Treatment

Several lice treatment options are available, including over-the-counter (OTC) medications, prescription drugs, and home remedies. OTC lice treatments contain insecticides that kill the lice and nits in the hair. Prescription drugs and home remedies may contain natural ingredients and oils that smother or suffocate the lice.

It is important to follow the instructions on the lice treatment products carefully. Applying too little or too much medication can affect its effectiveness. Using excessive medication can cause scalp irritation, redness, and even skin infections.

The Risks of Over-Treating Lice

Over-treating lice can be harmful to your scalp and overall health. Here are some of the risks of over-treating lice:

1. Scalp Irritation

Excessive use of lice treatment medications can cause scalp irritation, itching, and dryness. This can lead to red, scaly patches on the scalp, which are not only unsightly but also uncomfortable.

2. Allergic Reactions

Some people may be allergic to the active ingredients in lice treatment products, causing an adverse reaction. Allergy symptoms may include itching, redness, swelling, and hives. In rare cases, anaphylaxis can occur, which is a severe allergic reaction that can be life-threatening. It is essential to read the label of lice treatment products and consult a doctor before using them if you have a history of allergies.

3. Antibiotic Resistance

Using excessive antibiotics to treat lice can lead to antibiotic resistance. This means that the bacteria that cause the infection become resistant to the medication, making it less effective in treating future infections. Antibiotic resistance is a serious health concern, and it is crucial to use antibiotics only when necessary and as directed.

How to Avoid Over-Treatment of Lice

Here are some tips to avoid over-treatment of lice:

1. Follow the Instructions

Read the instructions carefully before applying any lice treatment product. Make sure you use the recommended amount and frequency of application.

2. Don’t use Lice Treatment Products too Frequently

Using lice treatment products too frequently can cause scalp irritation and increase the risk of antibiotic resistance. Wait for at least seven to ten days before using the medication again.

3. Don’t Apply more than the Recommended Amount

Applying more than the recommended amount of lice treatment medication will not kill the lice faster. It can lead to scalp irritation, redness, and skin infections.

4. Don’t Use more than one Lice Treatment Product at a Time

Using multiple lice treatment products at the same time can be dangerous and even deadly. Some ingredients can interact and cause severe adverse effects. Stick to one product at a time, and if it doesn’t work, consult your doctor for advice.


Lice infestations can be a real headache, but over-treating them can be harmful to your health. Applying too much medication can cause scalp irritation, skin infections, and even antibiotic resistance. It is crucial to follow the instructions on the lice treatment products and use them as directed. If you need more advice on treating lice infestations, please consult your doctor or a licensed medical professional.


What happens if you use too much Nix?

Nix Lice Control is an over-the-counter medication used to treat head lice and their eggs. However, it is important to follow the recommended dosage and application instructions, as using too much Nix can potentially cause adverse reactions.

If you use too much Nix, you may experience an increase in itching, swelling, or redness of the treated skin. These side effects are usually temporary and should subside within a few hours. However, if these symptoms persist or become worse, it is important to consult a healthcare professional.

Additionally, using too much Nix can potentially have more serious consequences, such as skin irritation, blistering, or even chemical burns. This is why it is essential to strictly follow the instructions provided with the medication and not exceed the recommended dosage.

If you accidentally apply too much Nix, it is crucial to immediately rinse the affected area with warm water and contact a healthcare professional for advice. In severe cases, medical attention may be necessary.

Using too much Nix can lead to temporary side effects such as itching, swelling, and redness. However, it can also have more serious consequences such as skin irritation, blistering, and chemical burns. Therefore, it is crucial to adhere to the recommended dosage and application instructions to avoid any potential adverse reactions.

Why is my head still itchy after lice treatment?

Lice infestation is a common problem in both children and adults. They are acquired through close personal contact with an infected person, and they can spread quickly from person to person, particularly in group settings such as schools and daycare centers. Standard treatment for lice infestation involves using a medicated shampoo or lotion to kill the lice and their eggs, followed by thorough combing with a fine-toothed comb to remove any remaining nits or dead lice.

Despite successful treatment, some people may still experience itching of their scalp even after the lice have been eliminated. This is because the itching is not caused by the presence of live lice or nits, but rather due to the body’s reaction to the lice and their waste products. When lice bite and feed on a person’s scalp, they inject saliva into the skin, which can cause an itchy allergic reaction. Even after the lice are dead, the itching may persist for several days or even a week until the skin fully recovers.

To reduce the itching, some home remedies such as using tea tree oil, coconut oil, or apple cider vinegar can be used, which help to soothe and moisturize the scalp. Additionally, over-the-counter antihistamines such as Benadryl can also be taken to reduce the allergic reaction and provide relief from the itching.

It is important to note that while treatment for lice infestation can be successful, follow-up care is crucial to ensure that the infestation does not return. This may involve thoroughly cleaning your home, washing bedding and clothing in hot water, and avoiding close contact with others who have lice. If you still experience persistent itching after lice treatment, or if you notice signs of a recurring infestation, consult your healthcare provider to help you find the best and most effective treatment.

Will lice fall out after treatment?

Lice infestations can be quite frustrating, and while treatments can be effective, it’s important to know what to expect after treatment. One common question that people typically ask is whether or not lice will fall out after treatment.

When treating lice infestations, it’s important to take an integrated approach that combines the use of medicated products with environmental and personal hygiene measures. This is because there are several stages of the lice life cycle, each requiring a different approach for effective elimination.

Typically, medicated products will be used to kill adult lice and nymphs. Depending on the product used, it can take 7-10 days for all lice to be killed. It’s important to follow the instructions provided on the product carefully, and repeat the treatment as required. Some treatments may require additional time for application or comb-outs to remove lice and nits, but this can vary depending on the product used.

As for whether or not lice will fall out after treatment, it’s possible that some lice may fall out of the hair during and after treatment. However, not all lice will necessarily fall out, and this doesn’t necessarily indicate treatment success. Additionally, combing out dead lice and nits may be necessary to fully eliminate the infestation, which may result in some lice falling out during the process.

In general, it’s important to note that the presence of nits does not necessarily mean that treatment has failed. Nits are the eggs of lice, and may remain in the hair even after treatment has been administered. However, if no live crawling insects are seen three weeks after the treatment is complete, it’s safe to assume that the lice infestation is gone. Nits would have hatched by that time if they were alive. It’s also important to use personal hygiene measures to help prevent re-infestation, such as keeping hair tied back, avoiding sharing personal items like hats and brushes, and washing clothing, bedding, and towels in hot water.

While lice may fall out during and after treatment, it’s not necessarily an indication of treatment success. Comb-outs and repeat treatment may be necessary to fully eliminate lice, and the presence of nits after treatment does not necessarily mean that the infestation has not been eradicated. Consistent personal hygiene measures can also help prevent re-infestation.

How often can you repeat head lice treatment?

Head lice infestation is a common problem among school-aged children and their families. Although there are many treatment options available, it can be difficult to completely eradicate the lice and nits (lice eggs) because they are highly contagious and spread easily through direct contact. Therefore, it is important to know how often you can repeat head lice treatment.

Typically, over-the-counter head lice treatments contain insecticides such as permethrin or pyrethrin. These ingredients kill the lice but may not always kill the eggs. Therefore, it is recommended to repeat the treatment every three or four days for at least two weeks. This will help ensure that any newly hatched lice are killed before they have the chance to lay new eggs.

It is important to always follow the directions on the product label carefully and use the treatment as directed. Overusing or misusing head lice treatments can be dangerous and may cause skin irritation, rashes, and other adverse effects.

In addition to using head lice treatments, combing can be a useful method to remove nits. A fine-toothed nit comb can be used to remove the nits from the hair strands. It is important to comb the hair thoroughly and wipe the comb frequently on a tissue or cloth to remove any lice or nits that may be present.

The frequency of head lice treatment depends on the type of treatment being used and the severity of the infestation. However, it is generally recommended to repeat the treatment every three or four days for at least two weeks to ensure that any newly hatched lice are killed before they have the chance to lay new eggs. Combining this with thorough hair combing and following product instructions will increase the effectiveness of treatment and help to eradicate the infestation.

Can you use ivermectin for lice more than once?

Ivermectin is an anti-parasitic medication that is commonly used to treat certain types of parasitic infestations in the body. It is also effective in treating head lice infestations. The lotion form of ivermectin, sold under the brand name Sklice, has been approved by the United States Food and Drug Administration (FDA) to treat head lice in people aged six months or older.

Unlike other head lice medications, which require multiple treatments over several weeks, ivermectin lotion only needs to be used once to effectively treat head lice. This is because ivermectin works by killing the lice and their eggs, so there is no need for repeat treatments as there would be with some other medications.

However, it is important to follow the instructions provided by your healthcare provider or the medication package insert when using ivermectin lotion. Make sure to apply the lotion to the entire scalp and hair, and leave it on for the recommended amount of time (typically 10 minutes). Afterward, rinse the hair and scalp thoroughly with water.

If you still have lice or nits 7 days after using ivermectin lotion, it is recommended to contact your healthcare provider. They may recommend an alternative treatment or may want to examine your scalp to confirm that the lice infestation has been effectively treated.

Ivermectin lotion is an effective treatment option for head lice and only needs to be used once. However, it is important to follow the instructions provided and to contact your healthcare provider if the lice infestation persists after treatment.