Mucocutaneous disease in Arabs with systemic lupus erythematosus: clinical expression and relevance to autoantibodies.

Both criterial and non-criterial mucocutaneous manifestations of 42 Arabs with systemic lupus erythematosus are reviewed. Photosensitivity occurred in 40.5%, malar rash in 35.75% and oral ulcers in 26% of patients. Subcutaneous nodules and subcutaneous lupus erythematosus (SCLE) were not seen, and there were few cases of discoid rash (DLE), Raynaud's phenomenon, livedo reticularis and SLE-related sicca and anticardiolipin syndromes. In the clinical relevance of autoantibodies in these patients, there was a significant association between anti-Sm antibodies and oral ulcers (P= 0.033) and, interestingly, between anti-cardiolipin (aCL) antibodies and lack of photosensitivity (P = 0.014). The report also reviews previously presented data on mucocutaneous LE in Arab and non-Arab patients and emphasises the presence of intra- and inter-racial variations of SLE expression including the clinical relevance to autoantibodies.