ANNULAR, RED

By Gary M. White, MD


When faced with an annular erythematous eruption, the first question is, "Is there scale?" If so, see Annular, Red and Scaly. This file deals with diseases for which there is no scale. The second question to ask is "How fast do the rings spread out?" Hives is the fastest, appearing, spreading and disappearing within hours to a day. EAC may enlarge over week. GA, sarcoid etc spread out of months.

Workup

For annular erythemas, common work up may include:

Common, Adults

Granuloma Annulare
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Erythema Annulare Centrifugum, Deep Type
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Lichen Planus

Arthropod Reaction

Exaggerated Bite Reaction
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Jessner Lymphocytic Infiltrate
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Erythema Migrans

Erythema Marginatum

Urticaria
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Sarcoidosis [JAAD 1984;11;26a]

Leprosy
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Lupus Erythematosus Tumidus

Reticular Erythematous Mucinosis

Erythema Marginatum

Morphea

Serum Sickness-like Reaction
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Sinus Histiocytosis with Massive Lymphadenopathy [JAAD 1997;37;643]

Sjögren's Syndrome

Eosinophilic Annular Erythema

Children

Annular Lichenoid Dermatitis of Youth

Infants, Annular

Urticaria

Neonatal Lupus
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Erythema Annulare Centrifugum, Deep Type

Annular Erythema of Infancy

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