Lichen Planus

Question 1

Lichen Planus

Answer 1

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

Question 2

Locations of LP

Answer 2

skin, hair, nails, genitalia, mucus membranes

Question 3

LP of oral mucosa has increased risk of

Answer 3

SCC

Question 4

Pathogenesis

Answer 4

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

Question 5

Clinical features

Answer 5

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

Question 6

Wickams Striae

Answer 6

lacy white surface pattern in buccal mucosa

Question 7

Koebner phenomena

Answer 7

rash induced by skin trauma such as surgery or scratching

Question 8

scalp LP

Answer 8

Fibrosing alopecia with typical LP symptoms during inflammatory stage

Question 9

Oral LP

Answer 9

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

Question 10

Genital LP

Answer 10

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

Question 11

Nail LP

Answer 11

Nail dystrophy or nail loss with itching and burning

Question 12

test to dx

Answer 12

bx

Question 13

Ddx

Answer 13

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

Question 14

tx

Answer 14

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

Question 15

newly dx LP need this examined

Answer 15

oral and genital