Amyloidosishttps://la.wikipedia.org/wiki/Amyloidosis
Amyloidosis est grex morborum in quibus proteinae abnormes, notae ut fibrillae amyloideae, in textu accumulantur. Papulae hyperkeratoticae valde pruriticae quae possunt coalescere ad formationem maculorum griseo‑brunneorum. Morbus plerumque afficit tibias anteriores et dorsum superior.

Diagnosis et curatio
#Electrophoresis of blood or urine
#Skin biopsy
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In anno 2022 Stiftung Warentest ex Germania provenit, satisfactio consumptoria cum ModelDerm paulo minus fuit quam cum consultationibus telemedicinis solutis.
  • Facies classica Amyloidosis
  • In visu magnificato observantur papulae durae figurae similis. Sunt inter se uniformes et durae, dissimiles perturbationes allergicae sicut dermatitis atopicæ.
  • Cutis lineamenta amyloidosis cutis dyschromica ― (A) maculae hyperpigmentatae et hypopigmentatae in crure inferiore
  • Lichen amyloidosis saepe misdiagnosticatur sicut dermatitis atopica. Casus typicus consistit cum papillis duris et pruritu.
  • Laesio amyloidosi similis est dermatitis atopicis.
References Lichen amyloidosis - Case reports 24130236 
NIH
Mulier XXVI annorum ad nostram clinicam venit, querens de pruriginosa exanthema in cruribus, quae iam per X annos durabat. Quamvis per cremor steroidus et cremor tazarotene, non meliorem fecit. Historia familiae nulla erat. Cum eam examinavimus, in cruribus eius papulae hyperkeratoticae tan‑brunnea discretae et coalescentes invenimus, quae morbo lichen amyloidosis (Lichen amyloidosis) consistent.
A 26-year-old woman presented to our clinic with an itchy rash on her legs that had persisted for 10 years. The rash had previously been treated with topical steroids and tazarotene cream, with no improvement. The patient’s family history was noncontributory. A physical examination showed discrete and coalescing hyperkeratotic tan-brown papules on the pretibial surfaces, consistent with lichen amyloidosis.
 Lichen Amyloidosis: Towards Pathogenesis-Driven Targeted Treatment 36763750 
NIH
Lichen Amyloidosis rara est conditio cutis cum pertinaci pruritu ignotae causae coniuncta. Plerumque ostendit papulas elevatas hyperkeratosas in superficie cutis. Lichen Amyloidosis solet in hominibus aetatis 50 ad 60 apparet et nullam curam habet. Curationes nunc praesto non bene operari solent.
Lichen Amyloidosis (LA) is an uncommon, primary cutaneous amyloidosis associated with chronic, idiopathic pruritus. Clinical presentation of LA includes skin colored to hyperpigmented, papules coalescing into plaques with a rippled appearance on the extensors.1 LA most commonly presents in the fifth to sixth decade of life and has no curative treatments. Overall response to current therapies is poor.
 Clinical Characteristics of Lichen Amyloidosis Associated with Atopic Dermatitis: A Single Center, Retrospective Study 38086357 
NIH
Lichen amyloidosis pruriginosa (pruritic) cutis diuturna est conditio. Notum est propter papulae hyperkeratoticae (hyperkeratotic papules) maxime in dorso, tibiis, femoribus, et armis repertis. Cum sub microscopio examinatus est, Lichen amyloidosis ostendit depositionem amyloideam (amyloid deposition) in strato papilario cutis cum crasso et dilatatione epidermidis. Quamquam causa exacta Lichen amyloidosis nondum plene cognita est, studia priora eam cum factoribus quasi frictione in cute, mortem cellularem, infectiones virales, inter alia coniunxerunt. Lichen amyloidosis cum pluribus aliis condicionibus cutis coniunctum esse videtur (atopic dermatitis, lichen planus, mycosis fungoides).
Lichen amyloidosis (LA) is a chronic pruritic skin disorder characterized by multiple grouped hyperkeratotic papules, predominantly located on the back, shins, thighs, and arms. Histological analysis of LA shows amyloid deposition in the papillary dermis and hyperkeratosis and acanthosis of the epidermis. The exact pathogenesis of LA has not yet been elucidated; however, prior reports have implicated frictional epidermal damage, apoptosis, viral infection, and many other triggers. LA is reportedly associated with several skin disorders, including atopic dermatitis (AD), lichen planus, and mycosis fungoides.