Motor symptoms are necessary for the diagnosis of PD. The four cardinal motor symptoms of PD are bradykinesia, tremor, muscular rigidity and postural instability. Gait impairement is very common in PD and may be one of the most important factors affecting the quality of life of Parkinson's patients.
PD is usually an asymmetric condition and motor symptoms are usually worse on the side where the symptoms first appeared; however, one out of five patients will not remember that their symptoms first started on a particular side of their body.
There multiple medications that can be used for the treatment of PD. However, levodopa and dopamine agonist may cause dyskinesia.