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Not to be confused with Arrythmia.
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Erythema
Classification and external resources

Characteristic "bull's eye" rash (erythema migrans) of early Lyme disease
ICD-10 L51-L54
ICD-9 695
DiseasesDB 4466
MeSH D004890

Erythema (from the Greek erythros, meaning red) 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] Examples of erythema not associated with pathology include nervous blushes.[2]

Contents

Diagnosis [edit]

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 it is associated with the dilation of arteries in the deeper layer of the skin.[citation needed]

Causes [edit]

It can be caused by infection, massage, electrical treatment, acne medication, allergies, exercise, solar radiation (sunburn), cutaneous radiation syndrome, niacin administration,[3] or waxing and tweezing 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]

May also be caused by Vitamin A toxicity.[4]

Associated conditions [edit]

See also [edit]

References [edit]

  1. ^ "erythema" at Dorland's Medical Dictionary
  2. ^ erythema, Mosby’s Medical, Nursing and Allied Health Dictionary, Fourth Edition, Mosby-Year Book 1994, p. 570
  3. ^ http://www.ncbi.nlm.nih.gov/pubmed/2084715
  4. ^ Textbook of veterinary physiological chemistry, by Larry Engelking

External links [edit]

Wikimedia Commons has media related to: Erythema
Urticaria and erythema (L50–L54, 695, 708)
Urticaria
(acute/chronic)
Allergic urticaria
Other urticaria
Erythema
Other erythema

M: INT, SF, LCT

noco (i/b/d/q/u/r/p/m/k/v/f)/cong/tumr (n/e/d), sysi/epon

proc, drug (D2/3/4/5/8/11)
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