Category
| __I Immediate - beginning within first 48 hours of event |
| __II Early - beginning 1 to 12 weeks from the initial event |
| __III Late - after 3 months, or with late trophic changes |
Symptoms
| __None |
| __Burning pain |
| __Hyperesthesia |
Early signs
| __None |
| __Swelling |
| __Discoloration or mottling |
| __Excessive sweating |
| __Temperature difference compared to other side: __Cold __Hot |
| __Stiffness |
| __Guarding posture |
| __Hand supported by other hand |
| __Pain with PROM PIP joints |
Late signs
| __None |
| __Dryness |
| __Soft tissue atrophy |
Plain X Rays
| __Normal or no RSD related changes |
| __Periarticular osteoporosis |
| __Cancellous cystic changes |