Patients with symptoms and/or signs suggestive of polyneuropathy, but without abnormalities on electrophysiological examination
| Only symptoms, no signs, | Symptoms and signs, | |
|---|---|---|
| n = 35 | n = 39 | |
| *Frequency. | ||
| Female:male | 15:20 | 19:20 |
| Age (years), mean (range) | 51 (27–76) | 58 (32–89) |
| Good outcome on SIP | (0.97*, 95% CI: 0.85 to 0.99) | 24 (0.62*, 95% CI: 0.45 to 0.77) |
| No diagnosis | 32 (0.91*, 95% CI: 0.77 to 0.98) | 15 (0.39*, 95% CI: 0.23 to 0.55) |
| Diagnosis | 3 (0.09*, 95% CI: 0.02 to 0.23) | 24 (0.62*, 95% CI: 0.45 to 0.77) |
| Conversion | Lumbar canal stenosis (n = 9) | |
| Erythromelalgia | Multiple sclerosis (n = 5) | |
| Cinguatera intoxication | Spinal dural arteriovenous fistula (n = 2) | |
| Claudicatio intermittens | ||
| (Distal) spinal muscular atrophy | ||
| Meningeoma C2 | ||
| Plexopathy | ||
| Radiculopathy | ||
| Intramedular tumour | ||
| Syringomyelia | ||
| Vitamin B12 deficiency | ||
| Possible small fibre neuropathy | 6 | 5 |
| Co-morbidity | Diabetes mellitus (DM) (3) | Diabetes mellitus (DM) (4) |
| Alcoholism (3) | Alcoholism (3) | |
| Renal disorders (1) | DM+alcoholism (1) | |