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Table 1 Causes of peripheral neuropathy according to studies in Norway and the Netherlands

From: Diagnosis of peripheral neuropathy

  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%  
  1. a = not classified, b = axonal in the study from the Netherlands