differentiate from non scarring:
-
absence of follicular openings
-
presence of frank scarring
-
presence of fibrosis on histology
Chronic discoid lupus erythematosus
well defined patches of:
erythema
follicular plugging
scaly skin
ultimately scarring
on scalp: leads to permanent hair loss
-
should stay out of the sun - aggravated by ultraviolet light
-
first line is very potent topical steroids: clobetasol
-
hydroxychloroquine usually next line
Lichen palnus:
- lichen planopilaris when affects hair follicles
redness around hair follicles - perifollicular erythema
follicular plugging
Folliculitis decalvans
intense focal scalp erythema
follicular pustules and crusting
subsequent dense scarring of the scalp
Dissecting cellulitis
- related to severe acne
- purulent nodules on scalp
> localised scarring alopecia