Erythema

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Erythema
Classification and external resources
ICD-10 L51.-L54.
ICD-9 695
DiseasesDB 4466
MeSH D004890

Erythema is redness of the skin, caused by hyperemia of the capillaries in the lower layers of the skin. It occurs with any skin injury, infection, or inflammation.[1]

Diagnosis

Erythema disappears on finger pressure (blanching), while purpura or bleeding in the skin and pigmentation do not. There is no temperature elevation in erythema, unless erythema is associated in the dilatation of arteries in the deeper layer of the skin.[citation needed]

Causes

It can be caused by infection, massage, electrical treatment, acne medication, allergies, exercise, solar radiation (sunburn), cutaneous radiation syndrome, or waxing and plucking of the hairs—any of which can cause the capillaries to dilate, resulting in redness. Erythema is a common side effect of radiotherapy treatment due to patient exposure to ionizing radiation.

In about 30–50% of cases, the cause of erythema is unknown.[citation needed]

Circumoral erythema has been described as a typical sign of acute oleander poisoning by ingestion.[1]

Associated conditions

See also

References

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External links

ca:Eritema

de:Erythema es:Eritema fr:Érythème id:Eritema infektiosum it:Eritema nl:Erytheem ja:紅斑 no:Erytema pl:Rumień pt:Eritema ru:Эритема sv:Erytem tr:Eritem uk:Еритема

wa:Rodjeur del pea
  1. erythema at Dorland's Medical Dictionary