Distinguishing Features of Movement Disorders and Non-Motor Symptoms in Parkinson's Disease

This chapter delves into the differences between rigidity and spasticity, explaining how rigidity is not affected by velocity while spasticity is velocity-dependent and linked to upper motor neuron issues. Additionally, it sheds light on the asymmetrical presentation of idiopathic Parkinson's disease and explores the range of non-motor symptoms including autonomic dysfunction, sleep disturbances, and psychiatric manifestations.