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pigmented or erythematous flat lesion on epidermis
peaked or dome-shaped surface elevation <5mm in diameter
basal cell carcinoma
elevated dome shaped lesion >5mm in diameter
flattened, elevated area on epidermis >5mm in diameter
fluid filled blister <5mm in diameter
fluid filled blister>5mm in diameter
fluid-filled blister with inflammatory cells
edematous, transient papule or plaque caused by inflitration of dermis by fluid
excessive dead keratinocytes produced by abnormal keratiniztion
increased thickness of stratum corneum; scaly appearance of skin
persistence of nuclei in stratum corneum layer
spire like projections from surface of skin to papillary dermis
loss of cohesion between keratinocytes
red discoloration of skin. RBC in vessels. Blanching.
Small spots (<2mm) caused by hemorrhage into the skin. Non-palpable. Non-blanching.
Skin lesions (2-10mm) caused by hemorrhage into the skin. +/- inflamation; +/- palpable. Non-blanching. Red->purple->brown/yellow.
purple skin lesions (>10mm) caused by hemorrhage into the skin (bruise). Non-palpable.
Burns, rickettsia akari.
Thick coagulated crust.
Rash from hands/feet->trunk
Pattern of rash for RMSF
Rash from extremities to trunk
- Rash pattern:
- Small pox
- Kawasaki's disease
Rash in lower extremities
Rash of neisseria meningitidis
Rash from hairline and spreads downwards
Rash of measles (rubeola)
Rash from neck to trunk (scarlatina).
rash of scarlet fever (GAS-S. pyogenes).
rash from head to trunk to extremities
varicella (VZV) rash pattern