Erythema

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Erythematous
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Erythema
erythema migrans) of early Lyme disease
SpecialtyDermatology

Erythema (from Greek erythros 'red') is redness of the skin or mucous membranes, caused by

hyperemia (increased blood flow) in superficial capillaries.[1] It occurs with any skin injury, infection, or inflammation. Examples of erythema not associated with pathology include nervous blushes.[2]

Types

Causes

It can be caused by

radiotherapy treatment due to patient exposure to ionizing radiation
.

Diagnosis

Erythema disappears on finger pressure (

pigmentation do not. There is no temperature elevation, unless it is associated with the dilation of arteries in the deeper layer of the skin.[citation needed
]

See also

References

External links