| Systemic autoimmune diseases | Number | Pourcentage | |
| Systemic lupus erythematosus | 43 | 61.43 | |
| Rheumatoid arthritis | 16 | 22.86 | |
| Sharp Syndrome/Mixed Connectivities tissue diseases (n = 6 cases; 8.57% of cases) | Systemic lupus erythematosus + rheumatoid arthritis + dermato-polymyositis + systemic scleroderma | 1 | 1.43 |
| Systemic lupus erythematosus + systemic scleroderma | 4 | 5.71 | |
| Systemic lupus erythematosus + rheumatoid arthritis | 1 | 1.43 | |
| Systemic scleroderma | 4 | 5.71 | |
| Dermato-polymyositis | 1 | 1.43 | |
| Systemic auto-immune vascularitis | 0 | 0.00 | |
| Total | 70 | 100.00 | |