clinical features,criteria Flashcards
amyloidoses:macular ddx:
notalgia paresthetica; ashy; drug induced,atrophic LP
lichen amyloidoses ddx:
papular mucinosis, pemphigoid nodularis, EB pruriginosa
amyloidoses Px:
- amyloid=fibril precursor/protein(AL, AA..)+amyloid P,GAG, apoE
- friction, genetic, EBV, Keratinocyte derived precursor protein
- fibrillar theory: tonofilament degeneration ; vs secretory theory
- Genetic: men2a(sipple) ripples RET, OSMRb; IL31RA; PC+PPK
nodular amyloidoses features
waxy nodules/plaques, surveillance(7%systemic), paraproteinemia 40%;
nodular amyloidoses Px
-local production Ig LC, plasma cell derived
aw Sjogrens.
primary systemic amyloidoses Px:
plasma cell dyscrasia(missing myeloma criteria-↑ca;osteolytic;AL fibrils, lamda IgLC ;
secondary; HD-assoc; genetic: periodic fevers: muckle wells(deafness, urticaria, AA nephropathy); FMF-pyrin, erysipeloid
primary systemic amyloidoses workup
Bx, directed lab(UECr/UA/LFT; Echo/BNP;nerve condx) surveillance-serum electrophoresis
specific mucocutaneous:primary systemic amyloidoses
oral(enlarged tongue, hemorrhagic yellow-brown papules/blisters);
periorbital/ pinch petechiae/purpura(minor trauma,cough)
yellow-flesh waxy papules/nodules
primary systemic amyloidoses systemic: cx
CTS, postural BP, nephrotic syndrome; CCF(restrictive CMP); gastroparesis; hepatomegaly;
CRP-Fx
asymptomatic intermamary/scapular/epigastric,hyperkeratotic verrucous, confluent centrally, reticulate peripherally;
CRP-Px:
insulin resistance- obesity/DM/endocrine vs keratinisation disorder(retinoid response), vs abnormal host response malasezia
CRP patho
hyperkeratosis, acanthosis, papillomatosis, club shaped bulbous rete ridge dirty feet,
CRP Rx:
po minocycline 50% effective, isotret/acitretin/salicyclic acid, azithro
prurigo pigmentosa: Fx
Boer’s criteria
recurrent crops pruritic papulovesicles, neck/back/chest, heal reticulated hyperpigmentation 4 st: 1.early urticarial 2. papulovesicular 3.crusted 4.reticulated hyperpigmentation
prurigo pigmentosa: Rx, prognosis
minocycline(antiinflammatory,neutrophil chemotaxis); dapsone, doxy,isotret/NBUVB,hydroquinone/azelaic;
Px: good but relapsing
prurigo pigmentosa:histo
(stage dependent)- spongiosis, vesiculatoin, exocytosis, perivascular infiltration
prurigo pigmentosa Px
Px-young japanese spring/summer,
ketosis(DM, ketonuria, fasting,pregnancy),
frictional/ACD-bismuth,para-amino(textile); Hpylori
Sjogren/AoSD;