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Erythema

 

 
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Erythema
 
 
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Erythema is redness of the skin
Skin

The skin is the outer covering of the body, also known as the epidermis. It is the largest organ of the integumentary system made up of multiple layers of epithelial biological tissue, and guards the underlying muscles, bones, ligaments and organ s....
 caused by capillary
Capillary

Capillaries are the smallest of a body's blood vessels, measuring 5-10 micrometre in diameter, which connect arterioles and venules, and enable the interchange of water, oxygen, carbon dioxide, and many other nutrient and waste chemical substances between blood and surrounding tissue s....
 congestion.








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Encyclopedia


Erythema is redness of the skin
Skin

The skin is the outer covering of the body, also known as the epidermis. It is the largest organ of the integumentary system made up of multiple layers of epithelial biological tissue, and guards the underlying muscles, bones, ligaments and organ s....
 caused by capillary
Capillary

Capillaries are the smallest of a body's blood vessels, measuring 5-10 micrometre in diameter, which connect arterioles and venules, and enable the interchange of water, oxygen, carbon dioxide, and many other nutrient and waste chemical substances between blood and surrounding tissue s....
 congestion.

Causes

It can be caused by infection
Infection

An infection is the detrimental colonization of a host organism by a foreign species. In an infection, the infecting organism seeks to utilize the host resources to multiply ....
, massage
Massage

Massage is the practice of soft tissue manipulation with physical, functional, and in some cases psychological purposes and goals. The word comes from the French language massage "friction of kneading," or from Arabic massa meaning "to touch, feel or handle" or from Latin massa meaning "mass, dough"....
, electrical treatment, acne
Acne

Acne is a group of skin rashes that have different causes.* Acne vulgaris - most commonly experienced around puberty, typically of the face and shoulders/chest...
 medication, allergies
Allergy

Allergy is a Disorder of the immune system often also referred to as atopy. Allergic reactions occur to Natural environmental substances known as allergens; these reactions are Acquired disorder, predictable and rapid....
, exercise, solar radiation (sunburn
SunBurn

SunBurn is a regional event held in Florida. Although SunBurn has its roots in the annual Burning Man festival in Nevada, it is not an official Burning Man event, because the organizers of SunBurn do not condone the direction that the Burning Man Organization has taken over the years....
), 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
Ionizing radiation

Ionizing radiation consists of subatomic particle radiation or electromagnetic radiation that are energetic enough to detach electrons from atoms or molecules, ionize them....
.

In about 30-50% of cases, the cause of erythema is unknown.

Associated conditions

  • Erythema ab igne
    Erythema ab igne

    Erythema ab igne refers to skin that is reddened due to long-term exposure to infrared radiation.Untreated, it can lead to skin cancer.It may also be seen in people with hypothyroidism, lymphoedema....
  • Erythema induratum
  • Erythema infectiosum (or fifth disease
    Fifth disease

    Erythema infectiosum or fifth disease is one of several possible manifestations of infection by erythrovirus previously called parvovirus B19....
    )
  • Erythema marginatum
    Erythema marginatum

    Erythema marginatum is described as the presence of pink rings on the trunk and inner surfaces of the arms and legs which come and go for as long as several months....
  • Erythema migrans
    Erythema migrans

    Erythema chronicum migrans refers to the rash often seen in the early stage of Lyme disease. It can appear anywhere from one day to one month after a tick bite....
  • Erythema multiforme
    Erythema multiforme

    Erythema multiforme is a skin condition of unknown etiology, possibly mediated by deposition of immune complex in the superficial microvasculature of the skin and oral mucous membrane that usually follows an antecedent infection or drug exposure....
     (EM)
  • Erythema nodosum
    Erythema nodosum

    Erythema nodosum is an inflammation of the fat cells under the skin . It causes tender nodules that are usually seen on both shins. EN is an immunologic response to a variety of different causes....
  • Erythema toxicum
    Erythema toxicum

    Erythema toxicum is a common rash in infants. It appears in up to half of newborns carried to term, usually between day 2-5 after birth....
  • Palmar erythema
    Palmar erythema

    Palmar erythema is reddening of the hands at the thenar and hypothenar eminences....


See also

  • Flushing (physiology)
    Flushing (physiology)

    For a person to flush is to become markedly red in the face and often other areas of the skin, from various physiology conditions. Flushing is generally distinguished, despite a close physiological relation between them, from blushing, which is milder, generally restricted to the face or cheeks, and generally assumed to reflect embarrassment....
  • Rash
    Rash

    A rash is a change of the skin which affects its color, appearance, or texture. A rash may be localized in one part of the body, or affect all the skin....
  • Radiotherapy


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