Erythema annulare centrifugum

Erythema Annulare Centrifugum

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Erythema Annulare Centrifugum

Erythema annulare centrifugum (EAC) is a type of skin disease that is characterized by red, ring-shaped lesions that spread outwards from the center. It is a form of erythema (redness of the skin or mucous membranes) and is considered a type of cutaneous condition.

Overview

EAC is a rare condition that can affect individuals of any age, but it is most commonly seen in adults. The cause of EAC is unknown, but it is thought to be a hypersensitivity reaction to a variety of triggers, including infections, medications, and certain types of food. The condition is not contagious.

Symptoms

The primary symptom of EAC is the appearance of red, ring-shaped lesions on the skin. These lesions typically start as small, red bumps that gradually expand outwards in a circular or ring-like pattern. The center of the lesion may clear up as it expands, giving it a ring-like appearance. The lesions can be itchy, but they are usually not painful.

Diagnosis

Diagnosis of EAC is typically based on the characteristic appearance of the skin lesions. A skin biopsy may be performed to confirm the diagnosis and to rule out other conditions that can cause similar skin lesions, such as ringworm or Lyme disease.

Treatment

Treatment for EAC is aimed at managing the symptoms and preventing the spread of the lesions. This may include the use of topical corticosteroids to reduce inflammation and itching. In some cases, oral medications may be needed. If a specific trigger is identified, such as a certain medication or food, avoiding that trigger can help to prevent future outbreaks.

See Also

• List of cutaneous conditions
• Erythema
• Dermatology