rashes Flashcards
symmetrical
internal problem
erythematous rash cause
increased blood flow
raised rash
- influx of cells like lymphocytes, eosinophils and neutrophils
- deposition of substances like mucin in tibial myxoedema (graves)_
epidermal rashes
eczema
psoriasiform
lichenoid
vesiculobullous/blistering
psoriasiform
thickening of epidermis to form plaques
lichenoid
violet and purple with influx of inflammatory cells. usually more serious and may be due to autoimmune destruction
vesiculobullous/blistering
forming fluid filler blisters
dermal rashes
vasculopathic
granulomatous
tissue deposition
vasculopathic
problems with blood vessels - inflammation of vessel and necrosis and necrosis of tissue supplied by the vessel
granulomatous
inflammation caused by histiocytes and brown macrophages. may be seen in TB
tissue deposition
amyloid or mucin deposition
rashes in lupus
- lupus vulgaris - facial TB (brown and granumatous)
- lupus pernio - facial sarcoid (purple)