Table 1 Clinical data

Gender (female, n (%))

8 (47%)

11 (65%)

12 (55%)

Age (years)

53 ± 14

53 ± 14

52 ± 13

Affected side (right), n (%)

11 (66%)

10 (60%)

Diagnosis, n (%)

CRPS I, 17 (100%)

Neuralgia of median nerve, 6 (36%)

Neuralgia of ulnar nerve, 5 (30%)

Neuralgia of radial nerve, 5 (30%)

Neuralgia of median, ulnar, radial nerve, 1 (6%)

Precipitating event, n (%)

  Fracture

6 (36%)

1 (6%)

  Crush injury

4 (24%)

8 (48%)

  Surgery

6 (36%)

4 (24%)

  Carpal tunnel syndrome

-

4 (24%)

  Other

1 (6%)

-

Current analgesics, n°

  No medication

4 (24%)

7 (42%)

  Opioids

7 (42%)

6 (36%)

  Tricyclic Antidrepressants

3 (18%)

6 (36%)

  Anticonvulsants

6 (36%)

8 (48%)

  Coxibs

5 (30%)

2 (12%)

  Other non-opioid analgesics

9 (54%)

4 (24%)

Cardiovascular risk factors, n (%)°

  Current smoker

4 (24%)

6 (36%)

5 (23%)

  Past smoker

3 (18%)

3 (18%)

2 (9%)

  Arterial hypertension

3 (18%)

5 (30%)

3 (14%)

  Diabetes mellitus

  Typ I

-

2 (12%)

-

  Typ II

1 (6%)

1 (6%)

1 (5%)

  Hypercholesterolemia

1 (6%)

2 (12%)

1 (5%)

Patients with cardiovascular risk factors, n (%)

  None

6 (36%)

5 (30%)

11 (50%)

  One factor

10 (60%)

6 (36%)

10 (45%)

  Two factors

1 (6%)

5 (30%)

1 (5%)

  Three factors

-

1 (6%)

-

Pain duration (months)

16 ± 13 (4…60)#

97 ± 12 (4…360)#

Patients < 12 months pain duration, n (%)

10 (60%) #

1 (6%) #

Current pain intensity (examination day, NRS 0–10)

4 ± 0

5 ± 4

Maximal pain intensity (examination day, NRS 0–10)

6 ± 4

7 ± 4

Patients with positive symptom categories, n (%) ° *

Sensory

14 (82%)

13 (77%)

Vasomotor

11 (65%)

8 (48%)

Sudomotor/edema

14 (82%)

7 (42%)

Motor/trophic

17 (100%)

15 (90%)

Patients with positive sign categories, n (%) ° *

  Sensory

13 (78%)

12 (72%)

  Vasomotor

11 (66%)

7 (42%)

  Sudomotor/edema

14 (82%)

5 (30%)

  Motor/trophic

17 (100%)

15 (88%)