57 Copyright © All rights are reserved by El Anzi Ouiam. Theranostics of Respiratory & Skin Diseases Case Report Clinical and Dermoscopic Features of Lichen Amyloidosis : A Case Report El Anzi Ouiam*, Maouni Safae, Sqalli Asmae and Hassam Badredine Department of Dermatology-Venereology, Morocco *Corresponding author: El Anzi Ouiam, Department of Dermatology-Venereology, Morocco Received: December 08, 2018 Published: December 17, 2018 Abstract Lichen amyloidosis (LA) is the most common form of primary cutaneous amyloidosis. It’s a very pruritic hyperkeratotic and coalescent papules usually localized on the anterior tibiae. The diagnostic is clinical, dermoscopy reveals two major dermoscopic patterns characteristic of LA, namely, ‘central hub’ and ‘scar-like’. Keywords: Lichen amyloidosis; Dermoscopy; Pruritus; Papules Introduction Papular amyloidosis, formerly called lichen amyloidosis (LA) is the most common form of primary cutaneous amyloidosis, histologically characterized by accumulation amyloid deposits in the dermis. It’s a very pruritic hyperkeratotic and coalescent papules usually localized on the anterior tibiae. We reported the case of a 70 year old man with 2 years history of a pruritic papular eruption on the lower legs (Figure 1). Figure 1: The clinical picture of a patient with lichen amyloidosus on the lower limb. Clinical case Figure 2A: Dermoscopic examination showing scar-like structureless area. An 80 years old woman with antecedents of high blood pressure and diabetes has consulted for pruriginous lesions of the anterior surfaces of the legs and knees evolving since 2 years. The clinical examination revealed multiple yellowish papules firm and rough on palpation on the lower limbs. The diagnosis of LA has been made and was confirmed by cutaneous biopsy with compact orthohyperkeratosis, acanthosis and amorphous amyloid deposits in the dermal papillae (Figure 2A). Dermoscopic examination showed a whitish scar-like center with structureless morphology surrounded by some brownish dots which is very specific to LA. ISSN: 2644-1306 DOI: 10.32474/TRSD.2018.01.000109