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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 (deep gyrate erythema, erythema perstans, palpable migrating erythema, superficial gyrate erythema) Erythema gyratum repens (Gammel's disease) Erythema migrans (erythema chronicum migrans) Erythema multiforme; Erythema multiforme minor (herpes simplex-associated erythema multiforme) Erythema palmare; Generalized ...
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
It is used to describe the rash in cutaneous larvae migrans, [3] erythema annulare centrifugum, [4] cutaneous pili migrans, [5] purpura annularis telangiectoides, ringworm, [6] balanitis circinata, [7] and some cases of bullous pemphigoid. [8]
The causes of a rash are numerous, which may make the evaluation of a rash extremely difficult. An accurate evaluation by a provider may only be made in the context of a thorough history, i.e. medications the patient is taking, the patient's occupation, where the patient has been and complete physical examination.
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]
Granuloma annulare (GA) is a rare, [1] sometimes chronic skin condition which presents as reddish bumps on the skin arranged in a circle or ring. [2] It can initially occur at any age, though two-thirds of patients are under 30 years old, and it is seen most often in children and young adults.