[Skip to Content]
[Skip to Content Landing]
September 1981

Erythema Annulare Centrifugum Associated With Ascariasis

Author Affiliations

From the Department of Dermatology (Dr Hendricks), Oncology Center (Drs Lu and Elfenbein), and Division of Immunology, Department of Medicine (Dr Hussain), The Johns Hopkins Medical Institution, Baltimore. Dr Hendricks is now with the Southeastern Dermatological Clinic P.A., Lumberton, NC. Dr Elfenbein is an investigator with the Howard Hughes Medical Institute. Dr Hussain is now with the Laboratory of Parasitic Diseases, National Institutes of Health, Bethesda, Md.

Arch Dermatol. 1981;117(9):582-585. doi:10.1001/archderm.1981.01650090064030

• Erythema annulare centrifugum (EAC) is a figurate erythema that has been associated with many diverse entities. A case of EAC was related to infestation by the nematode, Ascaris lumbricoides. A careful examination of the patient did not define an immunologic basis for EAC. Results of lymphocyte stimulation tests of the patient showed an immune response to A lumbricoides extracts but not to A suum extracts. This finding is of practical importance, since most laboratories use A suum extracts in routine skin and serologic tests for human ascariasis.

(Arch Dermatol 1981;117:582-585)