Diagnostic criteria for IAC
| Manifestation | Symptoms |
|---|---|
| Arthritis | Arthralgia, joint swelling and redness, limitation of movement. Synovial fluid shows no bacteria, cultures remain negative. |
| Vasculitis | Pustular, bullous, nodular lesions or rash. |
| Pericarditis | Retrosternal pain, pericardial friction rub, ECG abnormalities, cardiac enlargement on x ray/ultrasound. |
| Pleuritis | Pleural effusion on x ray. Pain on inspiration. Impaired percussion. Pleural rub |