Lichen Planus Flashcards

1
Q

Lichen Planus

A

idiopathic skin disease with inflammatory features of an autoimmune nature involving T cells

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2
Q

Locations of LP

A

skin, hair, nails, genitalia, mucus membranes

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3
Q

LP of oral mucosa has increased risk of

A

SCC

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4
Q

Pathogenesis

A

healthy adults w no known cause, can be correlated with viruses, meds, allergens.

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5
Q

Clinical features

A

pruritic, planar, polyangular, purple, papule, plentiful… flat topped with uneven border with a violaceous and shiny hue

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6
Q

Wickams Striae

A

lacy white surface pattern in buccal mucosa

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7
Q

Koebner phenomena

A

rash induced by skin trauma such as surgery or scratching

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8
Q

scalp LP

A

Fibrosing alopecia with typical LP symptoms during inflammatory stage

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9
Q

Oral LP

A

With or without cutaneous symptoms. White is asymptomatic, red is erosive and presents with pain and swelling

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10
Q

Genital LP

A

vulvar scarring in erosive forms and burning and itching pain and sexual function impairment

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11
Q

Nail LP

A

Nail dystrophy or nail loss with itching and burning

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12
Q

test to dx

A

bx

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13
Q

Ddx

A

lichenoid drug eruption (ace, thiazide diuretics, antimalarials), graft v host, autoimmune blistering diseases

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14
Q

tx

A

accelerate resolution, most resolve within 1-2 years, prevent scarring, high potency topical steroids, intralesional steroids for hypertrophic LP, extensive can do systemic for 4-6 weeks, antihistamines, phototherapy

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15
Q

newly dx LP need this examined

A

oral and genital

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