Table 2.

Budapest criteria for CRPS diagnosis

All of the following criteria must be met: Patient has continuing pain that is disproportionate to the inciting event Patient must have 1 sign in 2 or more categories below Patient must have 1 symptom in 3 or more categories below No other diagnosis can better explain the signs and symptoms
Signs and Symptoms
Sensory	Allodynia (pain from things that are not normally painful, e.g., light touch, temperature, deep somatic pressure, or joint movement) Hyperalgesia (heightened pain intensity from pinprick)
Vasomotor	Differences in skin temperature >1°C Differences in skin coloration on different sides of the body Skin color changes
Sudomotor/edema	Changes or asymmetry in swelling Changes of asymmetry in sweating
Motor/trophic	Decreased range of movement Motor symptoms (e.g., tremors, weakness, dystonia) Changes in hair, skin, nails (trophic)

CRPS = complex regional pain syndrome.