Supplementary Material for: Diffuse Lichen Planopilaris masquerading as Diffuse Alopecia Areata

Lichen planopilaris (LPP) is a primary lymphocytic cicatricial alopecia that represents a form of follicular lichen planus. We describe a case of coexisting diffuse lichen planopilaris and female pattern hair loss masquerading as diffuse alopecia areata in 32 year old female. In complex cases such as this, dermoscopy-guided vertical and horizontal biopsies from androgen sensitive and insensitive areas are helpful in increasing diagnostic yield. Prompt initiation of treatment is key to halt disease progression. Long term follow up is important as resolution of clinical signs does not always correlate with absence of disease progression.