Erythema marginatum

Erythema marginatum

Is described as the presence of pink rings on the trunk and inner surfaces of the arms and legs which come and go for as long as several months.

Causes

1. Infections
2. Bacteria: Escherichia coli , streptococcal infections
   
3. Fungi: Dermatophytes , Candida albicans and blue cheese Penicillium.
   
4. Mycobacteria: Mycobacterium tuberculosis.
   
5. Parasites: Ascaris lumbricoides
   
6. Viruses: (EBV) & was reported in an HIV-positive patient.
7. Drugs: In the cases of the antimalarials chloroquine and hydroxychloroquine, the eruptions took 5 months to a year to clear, and there are another many drugs ..
   
8. Neoplasms: Hodgkin disease, acute myelogenous leukemia (AML), and squamous cell carcinoma in a sebaceous cyst , and others …
9. Foods: Blue cheese and tomatoes have been reported to cause EAC.
   
10. Other causes
    

• Cholestatic liver disease
• Graves disease
  
• Hypereosinophilic syndrome
  
• Sjögren syndrome
  
• Sarcoidosis
  
• Osteoarthritis
  
• Stress
  
• Pregnancy

DDx

Cutaneous T-Cell Lymphoma Erythema Gyratum Repens Granuloma Faciale Lupus Erythematosus, Subacute Cutaneous

Management

Erythema annulare centrifugum (EAC) is usually self-limited. Topical steroids usually cause involution of the treated lesions, but they do not prevent the occurrence of new lesions or recurrence of the eruption.