What is the definition of hereditary spastic paraparesis?

Hereditary SP: Hsp, is a genetic disorder transmitted as autosomal dominant, meaning one of the parent has the disease in order to pass it to the offspring. It is a progressive spasticity in the legs , may be associated with hypertonic urinary incontinence, seizure, dementia, or peripheral neuropathy.

Read on: A condition usually causing slowly progressive mainly motor weakness specially in the lower extremities it sometimes is familial, although the cause may be sharing the same environment. A connection between this condition and an htlv1 virus infection is suggested as a cause.