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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.
Annular erythema of infancy (AEI) consists of self-limited eruptions of erythematous, annular to polycyclic patches and plaques. It is an idiopathic figurate erythema. [1] Over several days, a single lesion disappears without leaving behind any scale or hyperpigmentation. Mostly affecting the trunk, face, and extremities, this rash has no symptoms.
Erythema annulare centrifugum Superficial types: [18] Mild spongiosis, parakeratosis and microvesiculation. "Coat-sleeve anomaly": tight lymphohistiocytic infiltrate surrounding superficial vessels; Deep lesions: Sharply demarcated perivascular mononuclear cell infiltrate in middle to deep dermis [18] Not otherwise specified [notes 2]
The diagnosis of AGEP may be forthright in typical cases in which an individual: has taken a drug known to cause the disorder; develops multiple sterile pustules overlying large areas of red swollen skin starting a few days after initial drug intake; and has a histology of biopsied lesions that shows pustules just below the skin's Stratum ...
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
Several theories have been put forth, however the pathophysiology of pressure urticaria is unknown. [3] Although there isn't an obvious early cutaneous reaction, the time of the reaction following the application of pressure to the skin, the shape of the lesions, and the infiltrating cells observed on histopathologic examination are indicative of a late-phase reaction. [5]
Typically, dementia is associated with classic symptoms like confusion and memory loss. But new research finds that there could be a less obvious risk factor out there: your cholesterol levels ...
Serpiginous rash in cutaneous larvae migrans. Serpiginous, first known to be used in the 15th century, is a term from Latin serpere (“to creep”), usually referring to a creeping, snakelike or slowly progressive skin disease.