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 ...

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 ...

Parkinson’s disease is a neurological disorder in which nerve cells progressively die, resulting in the loss of dopamine, a chemical messenger that relays information between nerve cells, and from the ...

Nuchal rigidity refers to neck stiffness caused by serious medical conditions such as bacterial meningitis. You probably don’t give your neck the credit it deserves. It’s easy to take for granted that ...

Abdominal rigidity is stiffness of your stomach muscles that worsens when you touch, or someone else touches, your abdomen. It’s an involuntary response to prevent pain caused by pressure on your ...