Table 1
Factors
| Factor 1 | Factor 2 | Factor 3 | Factor 4 |
| Hyperalgesia signs (0.75) | Temperature asymmetry (0.68) | Edema signs (0.69) | Decreased range of motion signs (0.81) |
| Hyperesthesia symptoms (0.78) | Color change signs (0.67) | Sweating asymmetry (0.62) |
 Range of motion (0.77) |
| Allodynia signs (0.44) | Color change signs (0.67) | Edema symptoms (0.61) | Motor dysfunction signs (0.77) |
| – | – | – | Motor dysfunction symptoms (0.61) |
| – | – | – | Trophic symptoms (0.52) |
| – | – | – | Trophic signs (0.51) |
Factors and (factor loadings) that accrue from the principal component analysis of the diagnostic signs and symptoms of complex regional pain syndrome. From Harden et al. 35
The red arrow denotes a reduction in the range of motion (ROM)