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 ...

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 ...

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 ...

The shape and differentiated state of many cell types are highly sensitive to the rigidity of the microenvironment. The physical mechanisms involved, however, are unknown. Here, we present a ...