Total 32 clinical symptoms reported for Spinal muscular atrophy-progressive myoclonic epilepsy syndrome  Very Frequent (4)Uncommon (2)Occasional (11)Not Applicable Or Unknown (4)Frequent (10)Always (1)

Abnormal lower motor neuron morphology	Any structural anomaly of the lower motor neuron.   Synonyms:Lower motor neuron disease; Lower motor neuron manifestations; Lower motor neuron signs	Very frequent
Functional motor deficit	Synonyms:Functional motor problems	Very frequent
Lower limb muscle weakness	Weakness of the muscles of the legs.   Synonyms:Lower extremity weakness; Lower limb muscle weakness; Lower limb weakness; Muscle weakness in lower limbs	Very frequent
Myoclonus	Very brief, involuntary random muscular contractions occurring at rest, in response to sensory stimuli, or accompanying voluntary movements.   Synonyms:Myoclonic jerks	Very frequent