Back To School – Protect Against Head Lice and Threadworms

Prevent Those Back To School Unwanted Guests!

Head Lice

So the summer holidays are over for another year, much to the relief of many distraught parents and even grandparents, and your children have returned to school. However, with the return comes the perennial problems of head lice and threadworms, especially in under 10 year olds.

Head Lice

It is thought that 1 in 3 children in the UK may get head lice some time during the year.

Head lice are whitish grey/brown insects with the ability to change their colour to match hair colour and are the size of a sesame seed when they are fully grown. They can’t fly, jump or swim and are spread by head to head contact. They simply climb from the hair of an infested person to the hair of someone else. All types of hair can be affected and it has nothing to do with how clean it is. They only affect humans so cannot be passed on by animals.

Head Lice itchy head
Untreated for months the itching can make you slow witted – Hence Nitwit

Head lice will often cause a person’s head to itch. The itching isn’t due to the head lice biting the person’s scalp, but rather an allergy to the head lice as they suck blood.

However, not everybody is allergic so your child could have an infestation without you noticing. Even if your child is allergic to them the itching can take up to 3 months to develop.

Although an itchy scalp is the most obvious sign of head lice in your child’s hair, there are many other reasons that your child could be itchy, such as dandruff or eczema. Itching alone does not mean your child has an infestation.

Head Lice Life Cycle

A female head louse lays eggs by cementing them to hairs, often close to the roots where they are kept warm by he scalp. The eggs are pin head size so difficult to see. After 7-10 days the baby head lice hatch, while the empty eggshells/nits remain in place, glued to the hair.

Head lice eat by piercing the scalp using their mouth parts and feeding on blood. They take 9-10 days to become fully grown. A female head louse may start to lay eggs from 9 days after she hatches. To break the cycle they need to be removed within 9 days of hatching.

Detecting Head Lice

To confirm an active head lice infestation, a live louse must be caught through a reliable, accurate method such as detection combing. You can wet comb with the following steps;

Head Lice combing

  • Wash your child’s hair with ordinary shampoo and apply conditioner. Do not rinse or dry the hair
  • Use a wide tooth comb to remove any tangles
  • Then switch to a louse detection comb making sure the teeth of the comb slot into the hair at the roots with the bevel edge of the eeth lightly touching the scalp
  • Draw the comb down to the ends of the hair with every stroke
  • Remove head lice by wiping or rinsing he comb
  • Work methodically so the whole head is combed through. This takes about 15 minutes
  • Rinse out the conditioner and repeat the procedure in the wet hair
    • Treating Head Lice

      You should only treat people when a live louse has been detected. All members of the family who have been in close contact with the infected person must be treated. Don’t forget Grandma! Sprays and lotions designed to kill head lice can be used but they need to be applied correctly and thoroughly. Our pharmacist can give you advice on which ones are best to use.


      threadwormsThreadworms are tiny parasitic worms that hatch egges in, and infect, the large intestines of humans. They are the most common type of worm infection in the UK, especially in children under 10.

      Threadworms are white and look like small pieces of thread. You may notice them around your child’s bottom or in their stools. They spread by laying eggs around an infected person’s anus, usually at night. The worm excretes mucus that causes itching, Then when the infected person scratches the eggs get stuck under their fingernails. They ca then be transferred to their mouth or onto surfaces and clothes. Other people who touch an infected surface can transfer the eggs to their mouth.

      Treatment For Threadworm

      Girl with ThreadwormsIf you or your child has threadworms then everyone in your house will need to be treated because the risk of infestation spreading is high

      For most people treatment will involve taking a single dose of mebendazole to kill the worms. Another dose can be taken after 2 weeks if necessary. During treatment, and for 2 weeks afterwards, it is important to regularly vacuum your home and thoroughly wash your kitchen and bathroom on a regular basis.


      1. How do head lice spread?
      2. What causes the itching?
      3. How long do head lice eggs take to hatch?
      4. What is the best way of finding head lice?
      5. How quickly does a female head louse start to lay eggs?
      6. How common are head lice?
      7. What are threadworms?
      8. In which age group are they most common?
      9. How are they spread?
      10. How are they treated?

      [expand title=”Quiz Answers”]

      1. By head to head contact. The head lice climb from the hair of an infested person to the hair of someone else
      2. Allergy to the head lice
      3. 7-10 days
      4. Detection combing
      5. Within 9 days of hatching
      6. It is thought up to 1 in 3 in the UK may get head lice some time during the year
      7. They are tiny parasitic worms that hatch eggs in, and infect, the large intestine
      8. They are particularly common in children under 10
      9. Underneath people’s fingernails
      10. With a single dose of mebendazone