Erythema




Not to be confused with Arrythmia.









Erythema
Erythema migrans - erythematous rash in Lyme disease - PHIL 9875.jpg

Characteristic "bull's eye" rash (erythema migrans) of early Lyme disease
Specialty Dermatology

Erythema (from the Greek erythros, meaning 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]




Contents






  • 1 Causes


  • 2 Diagnosis


  • 3 Types


  • 4 See also


  • 5 References


  • 6 External links





Causes


It can be caused by infection, massage, electrical treatment, acne medication, allergies, exercise, solar radiation (sunburn), photosensitization[3], cutaneous radiation syndrome, mercury toxicity, blister agents,[4]niacin administration,[5] 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.



Diagnosis


Erythema disappears on finger pressure (blanching), while purpura or bleeding in the skin and 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]



Types



  • Erythema ab igne

  • Erythema chronicum migrans

  • Erythema induratum


  • Erythema infectiosum (or fifth disease)

  • Erythema marginatum

  • Erythema migrans


  • Erythema multiforme (EM)

  • Erythema nodosum

  • Erythema toxicum

  • Erythema elevatum diutinum

  • Erythema gyratum repens

  • Keratolytic winter erythema

  • Palmar erythema



See also



  • Flushing (physiology)

  • List of cutaneous conditions



References





  1. ^ Mosby's Medical Dictionary (9th ed.). St. Louis, Missouri: Elsevier. 2013. ISBN 978-0-323-08541-0..mw-parser-output cite.citation{font-style:inherit}.mw-parser-output q{quotes:"""""""'""'"}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-limited a,.mw-parser-output .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}


  2. ^ erythema, Mosby's Medical, Nursing & Allied Health Dictionary, Fourth Edition, Mosby-Year Book 1994, p. 570


  3. ^ Jane C. Quinn; Yuchi Chen; Belinda Hackney; Muhammad Shoaib Tufail; Leslie A. Weston; Panayiotis Loukopoulos (2018), "Acute-onset high-morbidity primary photosensitisation in sheep associated with consumption of the Casbah and Mauro cultivars of the pasture legume biserrula", BMC Veterinary Research, doi:10.1186/s12917-017-1318-7


  4. ^ https://fas.org/nuke/guide/usa/doctrine/army/mmcch/Vesicant.htm#CLINICAL Archived 2017-12-12 at the Wayback Machine. EFFECTS


  5. ^ Weterle R, Rybakowski J (Mar–Apr 1990). "Test niacynowy w schizofrenii" [The niacin test in schizophrenia]. Psychiatr Pol. 24 (2): 116–20. PMID 2084715.




External links





Classification
D



  • ICD-10: L51-L54


  • ICD-9-CM: 695


  • ICD-O: l


  • MeSH: D004890


  • DiseasesDB: 4466











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