Table 2.
Clinical features and laboratory findings of the patients in acute stage (n = 143)
| Clinical features | n (%) |
|---|---|
| Fever | 143 (100) |
| Symmetrical joint involvement | 121 (84.6) |
| Joint involvement at onset | |
| Generalized | 96 (67.1) |
| Ankle | 22 (15.4) |
| Knee | 15 (10.5) |
| Others | 10 (6.9) |
| Subsequent joint involvement | |
| Ankle | 119 (83.2) |
| Metacarpophalangeal joint | 100 (69.9) |
| Wrist | 97 (67.8) |
| Proximal interphalangeal joints | 84 (58.7) |
| Knee | 76 (53.1) |
| Shoulder | 64 (44.8) |
| Elbow | 51 (35.7) |
| Metatarsophalangeal joint | 46 (32.2) |
| Distal interphalangeal joints | 43 (30.1) |
| Others (hip, temporomandibular joint, axial plane) | 30 (20.9) |
| Joint swelling | 68 (47.6) |
| Morning stiffness | 117 (81.8) |
| Myalgia | 47 (32.9) |
| Skin involvement | 91 (63.6) |
| Pattern of skin involvement | |
| Pruritic erythematous rash | 67 (46.9) |
| Erythematous rash | 24 (16.8) |
| Functional disability | |
| Mild | 79 (55.2) |
| Moderate | 49 (34.3) |
| Severe | 15 (10.5) |
| Laboratory findings | |
| Positive Immunoglobulin M (IgM) | 135 (94.4) |
| Positive Immunoglobulin G (IgG) | 29 (20.3) |
| C-reactive protein (CRP) positive (n = 48) | 39 (81.2) |
| Erythrocyte sedimentation rate (mm in 1st hour), median [IQR] | 31.0 [15.0–45.0] |
| White blood cells count (103/µL), mean ± SD | 8.4 ± 2.4 |
| Platelet count (103/µL) mean ± SD | 297.1 ± 91.7 |
| Serum creatinine (mg/dl) | 0.8 ± 0.2 |
*IQR Inter-quartile range