Table 1 Revised diagnoses of patients with amyotrophic lateral sclerosis mimic syndromes referred to two population based registries
Revised diagnosisNo of patients
Scottish Registry (years 1989–1992: n = 552 patients)
    Cervical spondylotic myeloradiculopathy10
    “MND plus” syndromes7
    Cerebrovascular disease5
    Radiculopathy of unknown cause4
    Probable multiple sclerosis4
    Multiple system atrophy4
    Peripheral neuropathy of unknown cause4
    Multifocal motor neuropathy2
Irish Registry (years 1993–1997; n =  437 patients)
    Multifocal motor neuropathy7
    Kennedy disease4
    Motor neuropathy3
    Non-compressive myelopathy2
    Spinomuscular atrophy2