
Vuelta al cole: cómo comprobar si tu hijo tiene piojos y liendres
Revisado por el Dr Krishna Vakharia, MRCGPÚltima actualización por Lydia SmithÚltima actualización: 30 de agosto de 2023
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Los piojos y las liendres son muy frecuentes en los niños pequeños. Según la Asociación Británica de Dermatólogos, al principio del curso escolar de otoño es cuando es más probable que aparezcan. Así que si tu hijo vuelve del colegio con picor en la cabeza, ¿cómo puedes comprobar que estos bichos son la causa?
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What is the difference between head lice and nits?
Head lice are tiny insects that feed on blood from the human scalp and can attach to the hair. Nits are the small brown or white eggs left in the hair by lice.
Head lice are spread by head-to-head contact, but aren’t a sign of poor hygiene or an unclean home. Lice don't carry viruses or bacterial diseases.
Although you can't prevent head lice, you can stop them from spreading by getting rid of them quickly.
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Calvicie de patrón masculino
La calvicie de patrón masculino es el tipo común de pérdida de cabello que se desarrolla en la mayoría de los hombres en algún momento. El término médico es alopecia androgenética. La calvicie suele tardar entre 15 y 25 años, pero puede ser más rápida. Por lo general, al principio el pelo empieza a afinarse (retroceder) en los laterales (sienes). Al mismo tiempo, el pelo suele volverse más fino en la parte superior de la cabeza. Poco a poco aparece una calva en el centro del cuero cabelludo. Los lados que retroceden y la zona calva de la parte superior (la coronilla) se agrandan gradualmente y se unen, dejando una zona en la parte delantera. Con el tiempo, la zona delantera también se adelgaza. A menudo queda un borde de pelo alrededor de la parte posterior y los lados del cuero cabelludo. En algunos hombres, este borde de pelo también se adelgaza y desaparece, dejando un cuero cabelludo completamente calvo.
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What are the signs your child has head lice?
Head lice can make the head feel itchy or as if something is moving in the hair. However, the only way to be sure your child has lice is to comb through the hair to find the insects or their eggs.
You can do this using a special, fine-toothed comb - available online or in pharmacies or supermarkets - which will pick up the lice if they are there.
Head louse

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How to check your child for head lice and nits
Head lice are small insects that are up to 3 mm long. Nits - lice eggs - look like small yellow or brown dots. They’re often found on the hair close to the scalp, where the temperature is higher and keeps them warm before they hatch.
Using a head lice-detection comb, part the hair and check for eggs or lice. This can be easier to do if the hair is wet.
Lice eggs hatch up to two weeks after they are laid. After hatching, the remaining egg shell looks white or clear and stays attached to the hair.
Nits

How to get rid of head lice
If you find lice or nits, you should treat them quickly.
Try wet combing the hair
Wash the hair with normal shampoo, rinse and apply lots of conditioner. Then, thoroughly comb the hair from the roots to the ends using the fine-toothed comb. You can buy combs especially for this purpose - such as the Nitty Gritty.
When wet combing, check the comb for lice or eggs after every stroke and remove them by rinsing or wiping the comb.
If you are combing dry hair, you’ll need to look for live lice as you comb, and trap any using your thumb as you pull the comb out.
You should check all members of your household for head lice with this combing method.
Use medicated shampoos
You can buy medicated shampoos - such as Hedrin and sprays - such as Full Marks from pharmacies and supermarkets to kill head lice. Some products come with a comb to remove dead lice and eggs once you’ve used the shampoo or lotion.
It’s important to read the instructions as some medicated treatments may need to be repeated to ensure all the lice are eliminated.
You may want to avoid these products if your child has sensitive skin or allergies to certain chemicals or ingredients.
Always read the packaging as some insecticides aren't recommended for children under two years old, pregnant or breastfeeding women or people with eczema or asthma.
Remember the whole family will need to be treated to make sure everyone is free of nits and lice.
Historia del artículo
La información de esta página ha sido revisada por médicos cualificados.
Fecha de la próxima revisión: 30 de agosto de 2027
30 ago 2023 | Última versión
1 Feb 2023 | Originally published
Autores:
Lydia Smith

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