Bradykinesia (delay of movements) and akinesia (absence of movements) are the most common and sometimes the only manifestation of parkinsonism. In parkinsonism, automated movements are reduced or absent. Many movements are automated, e.g., eye blinking, facial expression, swallowing saliva, volume and intonation of the voice, arm swing when walking etc. etc.
Bradykinesia is therefore expressed in general diminishment and delay in movements. In addition, there is a monotonous speech with less articulation and less volume, reduced facial expression with sometimes a slightly open mouth, rapid fatigue, and weakness in the muscles, bent posture, walking slowly with small steps and reduced arm swing. Sometimes salivation occurs because the saliva is insufficiently swallowed and there is dysarthria or dysphagia.