 [ Symptoms ] can you tell me if leg weakness is a symptom of parkinson is disease [ Disease ] leg weakness is not typically a first sign in pd however pd usually is associated with stiffness and slowness of the limbs and this may feel like weakness if you have a tremor especially if it is in the leg i would be more likely to think about pd as a cause other things to consider pain can lead to favoring the other leg   and a sense of weakness a muscle or nerve problem in that leg a back injury causing pain in the leg or pinching of a nerve to the leg a stroke   but this is not likely given that it is quite sudden in onset and you would have gone to the hospital not webmd please consider an appt with a neurologist