Lichenoid Disorders

Question 1

what are lichenoid disorders characterised by

Answer 1

damage and infiltration between the epidermis and dermis

Question 2

what is the commonest type of lichenoid disorder

Answer 2

lichen planus

Question 3

what histology is seen in lichen planus

Answer 3

irregular sawtooth acanthosis, hypergranulosis and orthohyperkeratosis, band-like upper dermal infiltrate of lymphocytes, basal damage with formation of cytoid bodies

Question 4

how common is lichen planus

Answer 4

annual incidence around 0.5% population

Question 5

describe the papules seen in lichen planus

Answer 5

violaceous(purple/pink) flat-topped shiny papules

Question 6

what sites are typically affected by lichen planus

Answer 6

volar wrists/forearms, shins and ankles

Question 7

describe what Wickham’s striae seen in lichen planus is

Answer 7

fine lace-like pattern on surface of papules and buccal mucosa

Question 8

what other symptom is seen along with rash in lichen planus

Answer 8

intense itch(pruritis)