Erythema Annulare Centrifugum as a Cutaneous Manifestation Associated with Diabetes Mellitus: A Review of Its Clinical and Pathogenic Relationship
DOI:
https://doi.org/10.63969/mwmr5z19Keywords:
Erythema annulare centrifugum, Type 2 Diabetes Mellitus, Dermatologic marker, Chronic dermatosis, Systemic associationAbstract
Erythema annulare centrifugum (EAC) is a rare figurate dermatosis characterized by annular or arciform erythematous lesions. Although considered a hypersensitivity reaction pattern, increasing evidence has associated EAC with various systemic conditions, notably Type 2 Diabetes Mellitus (T2DM). This integrative review analyzed 25 indexed publications to explore the clinical and pathophysiological relationship between EAC and T2DM. The review included case reports, series, and clinical analyses, comparing manifestations in diabetic and non-diabetic individuals. Findings show that EAC in patients with T2DM often presents as a chronic, recurrent eruption, sometimes resistant to conventional therapy, and typically linked to poor glycemic control. Histopathological features, particularly the perivascular lymphocytic “coat-sleeve” infiltrate, were consistent across cases. Drug-induced variants, such as those triggered by metformin or biologics, and paraneoplastic EAC were also discussed. The review emphasizes EAC as a potential dermatological marker of systemic imbalance. Older literature was included to contextualize and support emerging trends. Future research should aim to clarify the immunometabolic mechanisms linking EAC with chronic diseases. Early identification of EAC may provide an opportunity for clinicians to detect undiagnosed systemic conditions, particularly T2DM.
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Copyright (c) 2025 Luis Alejandro Arellano Leyva, Emerson Alejandro Castro López, Jorge Angel Velasco Espinal, Ana Paula Calderón Aguirre, Alexa Fernanda Uriostegui Navarro (Autor/a)

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