Neck pain and stiffness can have many causes, but in most cases, the pain is a symptom of tight, tired, or injured muscles. However, an accident can lead to neck pain, as can poor posture and ...
A muscle knot in the neck is a tight, contracting muscle that can cause pain, tenderness, and headaches. Common triggers include unhealthy posture, stress, inactivity, overuse, and prolonged sitting.