Table 1.
Causes of peripheral neuropathy according to studies in Norway and the Netherlands
| Norway [5] | Netherlands [1] | USA [6] | |
|---|---|---|---|
| Number of patients: | 226 | 743 | 231 |
| Idiopathic axonalb | 28% | 26% | 12% |
| Diabetic | 18% | 32% | 46% |
| Toxic (alcohol, drugs chemotherapy etc.) | 10% | 14% | 13% |
| Inflammatory / Immune-mediated | 16% | 9% | 8% |
| Hereditary | 14% | 5% | 7% |
| Vasculitic, amyloid neuropathy, sarcoid, connective tissue disease | a | 5% | 1% |
| Uremic, thyroid dysfunction | a | 4% | 3% |
| Vitamin B12 deficiency | 4% | 3% | 1% |
| Others (i.e. idiopathic small fiber neuropathyb) | 10% | 2% |
a = not classified, b = axonal in the study from the Netherlands