Final diagnoses of patients with positive Lyme serology
| Serological results | Final diagnoses |
|---|---|
| IgM+/IgG+ (13 patients) | 9 Rheumatoid arthritis 2 Unclassified arthritis (Including 1 transient inflammatory arthritis that recovered after NSAID use and 1 chronic inflammatory arthritis controlled by methotrexate) 1 Sjögren's syndrome 1 Viral arthritis |
| IgM−/IgG+ (49 patients) | 37 Rheumatoid arthritis 7 Spondyloarthritis 3 Unclassified arthritis (Including 2 undifferentiated arthritis controlled by DMARDs+NSAID and 1 transient inflammatory arthritis with immune profile evocative of RA) 2 Sjögren's syndrome |
| IgM+/IgG− (91 patients) | 68 Rheumatoid arthritis 12 Unclassified arthritis 4 Spondyloarthritis 2 Osteoarthritis 1 Viral arthritis 1 Systemic lupus erythematosus 1 Complex regional pain syndrome 1 Sjögren's syndrome 1 Hepatitis C virus-related cryoglobulinaemic vasculitis |
DMARDs, disease-modifying antirheumatic drugs; NSAID, non-steroidal anti-inflammatory drug; RA, rheumatoid arthritis.