Subacute cutaneous lupus erythematosus
Subacute cutaneous lupus erythematosus (SCLE) represents a relatively distinct and homogeneous subset of lupus erythematosus (LE) identified by chronic and recurrent development of characteristic erythematous, non-scarring and mostly photosensitive skin lesions associated with particular clinical, immunological and genetic features. SCLE-specific cutaneous lesions include the papulosquamous—psoriasiform eruption and the annular-polycyclic erythema. These are found in approximately 10% of total LE patients and affect predominantly white Caucasian women of all ages. In addition, a significant proportion of patients with SCLE eruptions may have Sjögren’s syndrome (SS). Extracutaneous manifestations are usually, but not always, mild. Serum autoantibodies to Ro (SSA) cellular antigen that occur in approximately 25-30% of total systemic lupus erythematosus (SLE) patients, are more common in SCLE (found in 60-70%) suggesting that SCLE comprises roughly 30-40% of all anti-Ro (SSA) positive patients. Approximately 50% of anti-Ro (SSA) positive SCLE patients display also serum anti-La (SSB) antibodies. Associations of SCLE with HLA-DR3, HLA-DR2 as well as C4 null alleles have been also reported. Finally, besides SLE and SS, a number of other systemic diseases that have been described to precede, to coincide with or to follow the onset of SCLE include rheumatoid arthritis (RA), porphyria cutanea tarda, Sweet’s syndrome, malabsorption, gluten-sensitive enteropathy, hereditary angioedema and various malignancies, including malignant melanoma, lung, breast and gastric cancer.
KeywordsHereditary Angioedema Porphyria Cutanea Tarda Discoid Lupus Erythematosus Subacute Cutaneous Lupus Erythematosus Betamethasone Dipropionate
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