Which clinical feature is characteristic of hereditary spastic paraplegia (HSP)?

Which clinical feature is characteristic of hereditary spastic paraplegia (HSP)?

Hereditary spastic paraplegia (HSP) is characterized by progressive leg weakness and stiffness (spasticity). Notably, patients exhibit increased muscle tone, hyper-reflexia, and clonus, while maintaining well-preserved muscle power. Sensory loss and bladder involvement are typically absent.

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