Summary

Lichen amyloidosis is the most common form of
primary cutaneous amyloidosis. It is characterized by the
presence of hyperkeratotic, pruritic and persistent papules,
which may coalesce forming red brownish plaques, found
mostly on the extensor surface of the extremities.
Histopathological findings are represented by the deposits
of insoluble amyloid fibres in the papillary dermis.
We describe the case of a 47 year-old female patient,
who was admitted to our clinic for the presence of
infiltrated patches and plaques, composed of light brown,
grouped papules, involving the anterior and posterior
trunk, arms and thighs, of 15 years duration. The diagnosis
of lichen amyloidosis was established based on clinical and
histopathological examination.
We aim to discuss the main clinical, paraclinical and
treatment aspects in lichen amyloidosis.