Parkinson’s disease is a disorder of the central nervous system that gets worse over time with no cure. Because it targets the nervous system, it impairs movement. ‌Rigidity is one of the leading ...

Psychological entropy is uncertainty-driven anxiety about ever-increasing disorder in complex modern living, rife with social, environmental, and technological changes. Psychological rigidity is ...

Muscle rigidity refers to stiffness or tension in your muscles. This tends to happen when muscles contract for a long period of time, often due to stress. But certain medications and underlying ...