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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 .
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 annulare centrifugum (EAC), is a descriptive term for a class of skin lesion [2] presenting redness in a ring form (anulare) that spreads from a center (centrifugum). It was first described by Darier in 1916.
In biology, antrum is a general term for a cavity or chamber, which may have specific meaning in reference to certain organs or sites in the body. In vertebrates , it may refer specifically to: Antrum follicularum , the cavity in the epithelium that envelops the oocyte
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.
Idiopathic craniofacial erythema is a medical condition characterized by uncontrollable and frequently unprovoked facial blushing. Blushing can occur at any time and is frequently triggered by even mundane events, such as talking to friends, paying for goods in a shop, asking for directions or even simply making eye contact with another person.
Erythema is a common clinical feature in the overlying skin. [6] The clinical course of lupus erythematosus panniculitis lesions is chronic and relapsing. There are areas of lipoatrophic depression left behind after the nodules resolve.
A woman blushing and covering her face. Blushing or erubescence is the reddening of a person's face due to psychological reasons. [1] [2] [3] It is normally involuntary and triggered by emotional stress associated with passion, embarrassment, shyness, fear, anger, or romantic stimulation.