[…] can present as either a pure form of spastic paraplegia with lower limb spasticity, hyperreflexia and extensor plantar responses, presenting in childhood or adolescence, or
[orpha.net]
is a rare type of hereditary spastic paraplegia that can present as either a pure form of spastic paraplegia with lower limb spasticity, hyperreflexia and extensor plantar
[orpha.net]
[…] usually presents in late adolescence or early adulthood as a pure phenotype of lower limb spasticity with hyperreflexia and extensor plantar responses, as well as mild bladder
[orpha.net]