EntityQ2881413· pop 10· linked from 215 articleslateral sclerosisSign in to savemotor neuron disease characterized by painless but progressive weakness and stiffness of the muscles of the legsConnectionsmultiple system atrophyEntityInternational Standard Book NumberEntityAlzheimer's diseaseEntitynervous systemEntityepilepsyEntityheadacheEntitystrokeEntityneuronEntityParkinson's diseaseEntityspinal cordEntitymeningitisEntitydigital object identifierEntitydementiaEntityinflammationEntityneurologyEntitymigraineEntitymultiple sclerosisEntityALSConceptencephalitisEntityQ180686EntityCategoriesMotor neuron diseasesRare diseasesSystemic atrophies primarily affecting the central nervous system