Benzoyl Peroxide and Carcinogenic Potential Quiz
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Questions and Answers

What is the potential of benzoyl peroxide (2.5-10%) in relation to tumor initiation and complete carcinogenesis?

  • It is not likely to possess tumor initiating or complete carcinogenic potential (correct)
  • It is likely to possess complete carcinogenic potential
  • It has been linked to both tumor initiation and complete carcinogenesis
  • It may have potential for tumor initiation but not complete carcinogenesis

    • What type of effects were observed in mouse skin exposed to organic peroxides?

  • Acute effects related to carcinogenic potential
  • Chronic effects unrelated to carcinogenic potential
  • Subchronic effects related to carcinogenic potential (correct)
  • Long-term effects unrelated to carcinogenic potential

    • What is the concentration range of benzoyl peroxide mentioned in the text?

  • 10-15%
  • 15-20%
  • 5-10% (correct)
  • 2.5-5%

    • What is the first choice for treating acne?

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

    Why should oral antibiotics be used for the shortest time possible?

    <p>To prevent antibiotic resistance</p> Signup and view all the answers

    What is recommended to be used along with oral antibiotics for treating acne?

    <p>Topical retinoids and benzoyl peroxide</p> Signup and view all the answers

    What is the purpose of injecting a diluted corticosteroid into an inflamed acne cyst?

    <p>To treat the inflamed cyst and prevent scarring</p> Signup and view all the answers

    What is the potential consequence of a rupturing acne cyst?

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

    When may a consultant consider using intralesional corticosteroid injection for an acne cyst?

    <p>When the cyst becomes severely inflamed</p> Signup and view all the answers

    What is the primary benefit of intralesional steroid injection compared to topical steroids?

    <p>Bypassing the barrier of a thickened stratum corneum</p> Signup and view all the answers

    What is the primary purpose of delivering corticosteroids intralesionally?

    <p>Treating dermal inflammatory processes directly</p> Signup and view all the answers

    How do intralesional steroids differ from topical steroids in terms of skin thinning?

    <p>They reduce the chance of epidermal atrophy</p> Signup and view all the answers

    What is the recommended total dose of intralesional triamcinolone per injection site?

    <p>0.1-0.2 mL per square centimeter of involved skin</p> Signup and view all the answers

    Why should intralesional injections be intradermal and not subcutaneous?

    <p>To avoid causing a dent in the skin</p> Signup and view all the answers

    How often can intralesional triamcinolone injections be repeated?

    <p>Every 4-8 weeks</p> Signup and view all the answers

    Which of the following is a retinoid?

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

    What is the primary effect of retinoids on the skin?

    <p>Stimulate epithelial growth and rapid turnover of the horny layer</p> Signup and view all the answers

    How do retinoids prevent the formation of comedones?

    <p>Prevent the closure of the pilosebaceous orifice</p> Signup and view all the answers

    How do retinoids affect abnormal hyperproliferative keratinocytes?

    <p>They decrease the cohesiveness of the keratinocytes</p> Signup and view all the answers

    What is the potential effect of retinoids on the formation of comedones?

    <p>They prevent the formation of comedones</p> Signup and view all the answers

    In what way do retinoids modulate keratinocyte differentiation?

    <p>They modulate keratinocyte differentiation</p> Signup and view all the answers

    Which of the following is a topical retinoid?

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

    Which retinoid is commonly used for severe nodular acne?

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

    Which retinoid is commonly used in the treatment of photoaging?

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

    Which of the following has been reported to promote improvements in the appearance of acne lesions?

    <p>Lactic acid</p> Signup and view all the answers

    Which compound, complexed with quaternary ammonium salts, has been reported to promote improvements in the appearance of acne lesions?

    <p>N acetyl dl methionine</p> Signup and view all the answers

    Which of the following acids has been reported to promote improvements in the appearance of acne lesions?

    <p>Glycolic acid</p> Signup and view all the answers

    What is the long-term use of oral contraceptives commonly used for in the treatment of acne in women?

    <p>Suppressing overactive glands</p> Signup and view all the answers

    What is the primary effect of oral contraceptives on acne in women?

    <p>Clearing up acne</p> Signup and view all the answers

    How do oral contraceptives typically affect overactive glands in women with acne?

    <p>Suppressing overactive glands</p> Signup and view all the answers

    What type of light is used in phototherapy for treating acne?

    <p>Blue and red light</p> Signup and view all the answers

    Which therapy involves intense blue or violet light for treating acne?

    <p>Photodynamic therapy</p> Signup and view all the answers

    Which of the following is not used for treating acne, as per the given text?

    <p>Heat therapy</p> Signup and view all the answers

    At what age does acne of any severity usually remit spontaneously?

    <p>Early to mid 20s</p> Signup and view all the answers

    Who is more likely to have acne into their 40s?

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

    What is the typical prognosis for acne after the early to mid 20s?

    <p>It usually remits spontaneously</p> Signup and view all the answers

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