Systemic manifestation score.
| Clinical manifestation | Points |
|---|---|
| Fever | |
| 37–38°C | 1 |
| 38–39°C | 2 |
| 39–40°C | 3 |
| > 40°C | 4 |
| Evanescent erythematous rash | 1 |
| Generalized lymphadenopathy | 1 |
| Hepatomegaly and/or splenomegaly | 1 |
| Serositis | 1 |
| Anemia (hemoglobin < 9 g/dl) | 1 |
| Platelet count > 600 × 109/l or ferritin > 500 ng/ml | 1 |