Pigmentation Exam
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Questions and Answers

Which of the following is true about melanocytes and melanin production?

  • Melanocytes produce melanin to provide sunscreen protection from UV rays.
  • Melanocytes produce melanin to give the skin its brownish tint.
  • Melanocytes produce melanin to protect against the damaging effects of the sun.
  • Melanocytes produce melanin to combat UV damage to the skin. (correct)
  • What is the most appropriate treatment for freckles?

  • Photodynamic Therapy
  • IPL (Intense Pulsed Light) (correct)
  • Diathermy
  • Chemical peels
  • What is the main cause of solar lentigines?

  • Genetic predisposition
  • Hormonal imbalance
  • Repeated sun and sun bed exposure (correct)
  • Chemical peels
  • What is the main cause of poikiloderma?

    <p>Repeated sun and sun bed exposure</p> Signup and view all the answers

    What can cause post-inflammatory pigmentation?

    <p>UV exposure during the first days of healing</p> Signup and view all the answers

    What can cause loss of pigment in the skin?

    <p>UV exposure or skin trauma</p> Signup and view all the answers

    Which cells in the human skin are responsible for manufacturing the brown pigment melanin?

    <p>Melanocytes</p> Signup and view all the answers

    What is the function of melanin in the skin?

    <p>To protect the skin from UV radiation</p> Signup and view all the answers

    What can stimulate melanocytes to produce melanin, apart from UV radiation?

    <p>Exposure to chemicals</p> Signup and view all the answers

    What is the primary enzyme responsible for controlling melanin production in human melanocytes?

    <p>Tyrosinase</p> Signup and view all the answers

    What determines the type of melanin made in the body?

    <p>Genetics</p> Signup and view all the answers

    What are the organelles in which melanin is packaged within melanocytes called?

    <p>Melanosomes</p> Signup and view all the answers

    Which of the following is NOT a cause of pigmentation problems in the skin?

    <p>Vit B12, C &amp; A deficiency</p> Signup and view all the answers

    What is the main trigger for Chloasma/Melasma?

    <p>Oestrogen</p> Signup and view all the answers

    Which skin areas are commonly affected by Post Inflammatory Hyper-pigmentation (PIH)?

    <p>Face and hands</p> Signup and view all the answers

    What is the main purpose of Intense Pulsed Light (IPL) treatment for pigmentation?

    <p>To absorb melanin in the skin</p> Signup and view all the answers

    Which filter is typically better for treating deep pigment lesions?

    <p>560</p> Signup and view all the answers

    What is the recommended time period for healing after IPL treatment?

    <p>3-4 weeks</p> Signup and view all the answers

    What is the first step before undergoing IPL treatment for pigmentation?

    <p>Have a skin check by a doctor</p> Signup and view all the answers

    What should therapists avoid when treating pigmented areas?

    <p>Treating areas that have not been checked</p> Signup and view all the answers

    Study Notes

    Understanding Pigmentation and its Causes

    • Human skin contains melanocytes, which produce the brown pigment melanin in response to sunlight.
    • Melanin acts as a sunscreen to protect the skin from UV radiation and potential skin cancer.
    • Other factors, such as hormones and inflammation, can also stimulate melanocytes to produce melanin.
    • Melanin production is controlled by the enzyme tyrosinase, which determines the type of melanin produced (red/yellow or brown/black).
    • Melanin is packaged into melanosomes and transferred from melanocytes to surrounding keratinocytes in the skin.
    • Melanin deposition near the skin's surface gives the skin its brownish tint.
    • Age spots occur when the sun damages melanocytes, resulting in abnormal melanin production.
    • Fair-skinned individuals are more prone to age spots and sun damage.
    • Chloasma and melasma are types of hormonal pigmentation that occur during pregnancy or due to medication.
    • Solar lentigines are caused by repeated sun exposure and can be improved with various treatments.
    • Freckles are common in fair-skinned individuals and can be treated with Intense Pulsed Light (IPL).
    • Post-inflammatory pigmentation occurs as a result of trauma, infection, or skin irritations, and can be worsened by UV exposure.

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    Description

    Test your knowledge on pigmentation and the role of melanocytes in human skin. Learn about melanin production and its importance in protecting the skin from sunlight damage.

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