familial amyotrophic lateral sclerosis juvenile amyotrophic lateral sclerosis https://rarediseases.info.nih.gov/diseases/11901/juvenile-amyotrophic-lateral-sclerosis https://www.malacards.org/card/juvenile_amyotrophic_lateral_sclerosis GARD:0011901 juvenile Lou Gehrig disease amyotrophic lateral sclerosis, juvenile Juvenile amyotrophic lateral sclerosis (JALS) is a very rare severe motor neuron disease characterized by progressive upper and lower motor neuron degeneration causing facial spasticity, dysarthria, and gait disorders with onset before 25 years of age. MONDO:0017593 UMLS:C3468114 SCTID:718555006 MEDGEN:923704 JALS juvenile Charcot disease Orphanet:300605