Erythema annulare is not a precursor of cancer, and there is individual variability.
Erythema annulare is actually a manifestation of rheumatic fever skin symptoms, which is a diagnostic value of cutaneous rheumatic lesions, but this lesion is clinically rare, mostly seen in children, and is one of the manifestations of rheumatic disease activities.
Although breast cancer, lung cancer, ovarian cancer and other diseases may be complicated by erythema annulare, but erythema annulare does not belong to the precursor of cancer, this belongs to the skin disease characterized by gyriform or annular erythema, and does not belong to the independent disease, pathological diagnosis can be seen under the microscope of dermal blood vessel dilatation and congestion, the tissue around the blood vessels is edematous, and the inflammatory cells are infiltrated.
When the patient appears ring-shaped erythema, should pay great attention to, need to cooperate with the doctor for dermatology and rheumatology and immunology examination, and give targeted treatment and therapy.