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Erythema (Ancient Greek: ἐρύθημα, 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 .
Erythema marginatum (also known as chicken wire erythema) [1] is an acquired skin condition which primarily affects the arms, trunk, and legs. [2] It is a type of erythema (redness of the skin or mucous membranes ) characterised by bright pink or red circular lesions which have sharply-defined borders and faint central clearing.
Necrolytic migratory erythema (NME) is a red, blistering rash that spreads across the skin. It particularly affects the skin around the mouth and distal extremities; but may also be found on the lower abdomen, buttocks, perineum , and groin.
Figurate erythema is a form of erythema (reddening of the skin) that presents in a ring or an arc shape. An example is erythema marginatum. [1] Classical types include: [2] Erythema annulare centrifugum; Erythema marginatum rheumaticum; Erythema chronicum migrans; Erythema gyratum repens
Erythema contusiforme, when a subcutaneous hemorrhage (bleeding under the skin) occurs with an erythema nodosum lesion, causing the lesion to look like a contusion (bruise) Erythema nodosum migrans (also known as subacute nodular migratory panniculitis ), a rare form of chronic erythema nodosum characterized by asymmetrical nodules that are ...
Antrum follicularum, the cavity in the epithelium that envelops the oocyte; Mastoid antrum, a cavity between the middle ear and temporal bone in the skull; Stomach antrum, either Pyloric antrum, the lower portion of the stomach. This is what is usually referred to as "antrum" in stomach-related topics [citation needed]
Erythema toxicum neonatorum is a common, non-threatening rash in newborns. [ 1 ] [ 2 ] It appears in 40-70% of newborns within the first week of life, and it typically improves within 1–2 weeks. [ 2 ] [ 3 ] [ 4 ] It only occurs during the newborn period, but may appear slightly later in premature babies.
Erythema dyschromicum perstans (also known as ashy dermatosis, and dermatosis cinecienta) is an uncommon skin condition with peak age of onset being young adults, but it may also be seen in children or adults of any age.