Lichen Striatus: Rare Linear Dermatosis

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Questions and Answers

What is the most common age of onset for lichen striatus?

  • Between 3 and 5 years (correct)
  • Between 5 and 10 years
  • Between 10 and 15 years
  • Between 18 and 25 years

What is the gender ratio for lichen striatus?

  • 4:1 (female to male)
  • 1:1
  • 3:2 (male to female)
  • 2-3:1 (female to male) (correct)

What is a possible cause of lichen striatus according to the text?

  • Environmental stressors (correct)
  • Hormonal imbalance
  • Excessive sunlight exposure
  • Genetic inheritance

What is the etiology of lichen striatus based on the text?

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

Which part of the body does lichen striatus most frequently affect?

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

What percentage of individuals with lichen striatus have a personal or family history of atopy?

<p>60% (B)</p> Signup and view all the answers

What is the most common time of onset for lichen striatus outbreaks?

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

Which virus has been detected within lesions of linear lichen planus?

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

What is the typical presentation of lichen striatus?

<p>Flat-topped, 1- to 3-mm, pink, tan, or hypopigmented papules in a linear configuration or Blaschkoid distribution (C)</p> Signup and view all the answers

Where is pruritus most commonly present in cases of lichen striatus?

<p>In 5-34% of cases (D)</p> Signup and view all the answers

Which body locations are most commonly affected by lichen striatus?

<p>Extremities and trunk (C)</p> Signup and view all the answers

What type of skin changes are seen in cases of nail involvement in lichen striatus?

<p>Longitudinal ridging, onycholysis, splitting, fraying, and loss of the nail plate (B)</p> Signup and view all the answers

Which cells are the predominant infiltrate at the dermoepidermal junction (DEJ) in lichen striatus?

<p>CD8 cells (C)</p> Signup and view all the answers

What is the mean duration of lichen striatus?

<p>~6-12 months (A)</p> Signup and view all the answers

What is the recommended first-line topical treatment for symptomatic pruritus in lichen striatus?

<p>Topical steroids (B)</p> Signup and view all the answers

What percentage of lichen striatus cases show postinflammatory hypopigmentation?

<p>50% (B)</p> Signup and view all the answers

Which cells are decreased overall in lichen striatus?

<p>Langerhans cells (C)</p> Signup and view all the answers

What is the first-line topical treatment for symptomatic pruritus in lichen striatus?

<p>Low to mid-potency topical steroids (B)</p> Signup and view all the answers

Which medication can be used as an effective alternative for lichen striatus if there is facial involvement or disease refractory to topical corticosteroids?

<p>Topical calcineurin inhibitors (B)</p> Signup and view all the answers

What may be helpful in cases of more generalized itch or in cases of sleep disruption in lichen striatus?

<p>Oral antihistamines (C)</p> Signup and view all the answers

What is a possible treatment combination for nail involvement in lichen striatus, as mentioned in the text?

<p>Topical corticosteroids and calcineurin inhibitors combined with intralesional corticosteroids (B)</p> Signup and view all the answers

What is a common histologic finding in cases of lichen striatus?

<p>Mild spongiosis with a lichenoid tissue reaction (A)</p> Signup and view all the answers

Which skin condition can mimic the histologic features of lichen striatus?

<p>Lichen planus (C)</p> Signup and view all the answers

In clinical practice, which type of skin changes are rarely seen in cases of lichen striatus?

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

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