What Is Erythema Annulare Centrifugum?
Centrifugal circular erythema is also known as persistent circular erythema, persistent exudative erythema, persistent contoured erythema, and persistent patterned erythema. It is a recurring ring-shaped erythema type skin disease of unknown cause, often accompanied by other diseases. It can occur at any age, occurs frequently from March to October, and is more common in summer. The average disease duration is 11 months. Most cases can resolve on their own and the prognosis is good. In a small number of patients with malignant tumors, the prognosis depends on the tumor status.
Basic Information
- nickname
- Persistent erythema erythema
- English name
- erythema annulare centrifugum
- Visiting department
- dermatology
- Common symptoms
- Pale red flat papules that continuously expand outward, the central rash receding, the edges bulging, forming a ring or semi-ring
Etiology of eccentric ring erythema
- Most cases have unknown causes and may be allergic reactions to certain antigens. Suspected antigenic factors and associated diseases are: infections, including fungi, bacteria, viruses, and parasites; drugs, including amitriptyline, spironolactone, salicylic acid, penicillin, and vitamin K; visceral diseases, including hyperthyroidism , Hashimoto's thyroiditis, autoimmune progesterone dermatitis, chronic skin and mucosal candidiasis, lymphoma, leukemia, etc.
Eccentric erythema clinical manifestations
- Divided into superficial type and deep type. The superficial type is pale red flat papules, with centrifugal enlargement, bulging edges, inner scales may be attached, and the skin lesions in the central area subsides to form a ring, which is pale red or yellowish. Form double-ring, multi-ring or ground pattern. The skin lesions subsided after 1 to 2 weeks, leaving pigmented spots. Atypical skin lesions include small blisters, telangiectasias, and purpura at the edge of the erythema. Skin lesions are distributed on the trunk and extremities, especially in the thighs and buttocks, and rarely involve the head, face, palms, and mucous membranes. Compared with the superficial type and the superficial type, the erythema has no scales, the edges are raised, and the infiltration is marked and solid, without itching. A few cases have joint pain and sore throat. The disease recurs periodically and the skin lesions persist for many years.
- The prognosis is good if the disease is uncomplicated. If there is a tumor or severe visceral system disease, the prognosis depends on the severity of the complications and the treatment.
Eccentric erythema diagnosis
- According to ring-shaped, polycyclic, map-like erythema, the edges are raised, scales are attached, the center subsides, and stains remain, which occur in the trunk and limbs, especially the thighs and hips.
Differential diagnosis of eccentric erythema
- Need to be differentiated from other diseases with ring-shaped skin lesions, including: chronic migratory erythema, rheumatic ring-shaped erythema, lame ring-shaped erythema, ringworm, ring granuloma, tuberculous leprosy, skin syphilis Wait.
Eccentric erythema ring treatment
- Find out the cause and perform treatment for the cause. However, there is often no clear cause, and symptomatic treatment is currently the main treatment. Topical topical glucocorticosteroids, oral antihistamines, calcium and vitamins.