Spastic paraplegia 4 (SPG4; also known as SPAST-HSP) is characterised by insidiously progressive bilateral decrease-limb gait spasticity. Greater than fifty% of affected men and women have some weak spot inside the legs and impaired vibration perception at the ankles.???? ??? ? ?? ??: ??? ??? ???? ???? ??? ? ????.Hypokalemic periodic paralysis (hyp