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Lice: Tiny Invaders, Big Public Health Impact

Hello everyone!

Today, our blog will address a topic that, although often considered trivial, represents a significant public health problem: pediculosis, or head lice infestation.

Lice: What are they and why are they a problem?

Head lice are parasitic insects that live on the human scalp, feeding on blood. They cause intense itching, irritation, and can lead to problems such as scalp sores and difficulty sleeping.

Pediculosis as a public health problem:

  • The prevalence of pediculosis is high, especially in school-aged children.

  • It is estimated that 3 to 10% of children in Portugal are infested with head lice each year.

  • This generates a considerable social impact, affecting the family, school, and professional environment.

  • Children who are infested may suffer from:

    • Intense itching and irritability.

    • Sleep disturbances and difficulty concentrating.

    • Impaired academic and social performance.

    • School absenteeism.

    • Social stigma.

Transmission and Prevention:

  • Head lice are easily transmitted through direct head-to-head contact, especially in environments such as schools, daycare centers, and camps.

  • Sharing personal items such as combs, brushes, and hats also facilitates the spread of parasites.

  • Effective prevention of pediculosis requires joint measures of personal hygiene, education, and collaboration between families, schools, and the community.

Prevention Measures:

  • Avoid direct head-to-head contact.

  • Do not share personal items.

  • Inspect hair regularly for signs of infestation.

Treatment and Control:

  • Specific products, such as medicated lotions or shampoos, which must be used according to the manufacturer's instructions.

  • Professional treatment at professional clinics, such as Happy Heads Clinic

  • It is crucial to follow hygiene and prevention measures to avoid reinfestation and transmission to others.

  • Collaboration between parents, educators, and healthcare professionals is essential for effective lice control.

If you need a treatment, book now!


Pediculosis, although often underestimated, is a public health problem that requires attention and effective control measures. Through the implementation of appropriate prevention, education, and treatment measures, we can significantly reduce the impact of pediculosis on public health and people's quality of life.

Share this post with your friends and family to raise awareness about pediculosis and contribute to its prevention!

See you soon!

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