38. Motor neuron diseases

Upper motor neurons (UMN)
Lower motor neurons (LMN)

1. Amyotrophic lateral sclerosis (ALS): UMN degeneration + LMN degeneration?
2. Progressive muscular atrophy (PMA): LMN degeneration?
3. Primary lateral sclerosis (PLS): UMN degeneration?
4. Progressive bulbar palsy (PBP): LMN degeneration?
5. Hereditary spastic paraplegia (HSP): LMN degeneration?
6. Pseudobulbar palsy: UMN degeneration?

Answers