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 (A)</p> Signup and view all the answers

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

<p>To prevent antibiotic resistance (A)</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 (B)</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 (A)</p> Signup and view all the answers

What is the potential consequence of a rupturing acne cyst?

<p>Scarring (C)</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 (C)</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 (B)</p> Signup and view all the answers

What is the primary purpose of delivering corticosteroids intralesionally?

<p>Treating dermal inflammatory processes directly (A)</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 (D)</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 (D)</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 (A)</p> Signup and view all the answers

How often can intralesional triamcinolone injections be repeated?

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

Which of the following is a retinoid?

<p>Tretinoin (B)</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 (C)</p> Signup and view all the answers

How do retinoids prevent the formation of comedones?

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

How do retinoids affect abnormal hyperproliferative keratinocytes?

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

In what way do retinoids modulate keratinocyte differentiation?

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

Which of the following is a topical retinoid?

<p>Adapalene (D)</p> Signup and view all the answers

Which retinoid is commonly used for severe nodular acne?

<p>Isotretinoin (A)</p> Signup and view all the answers

Which retinoid is commonly used in the treatment of photoaging?

<p>Tretinoin (C)</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 (B)</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 (A)</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 (A)</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 (C)</p> Signup and view all the answers

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

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

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

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

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

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

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

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

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

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

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

<p>Women (B)</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 (A)</p> Signup and view all the answers

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