What is the difference between a stiff neck and cervical spondylosis?

Neck sprain and cervical spondylosis are two distinct medical conditions, differing mainly in the following aspects: 1. Causes: Neck sprain is primarily caused by poor sleeping posture, inappropriate pillow height, or neck exposure to cold, leading to neck muscle tension or spasms. Cervical spondylosis, on the other hand, results from degenerative pathological changes in the cervical spine, such as bone spurs and intervertebral disc protrusion, which may compress the spinal cord, nerve roots, or vertebral arteries. 2. Symptoms: The main symptoms of neck sprain include neck pain, stiffness, and limited range of motion, typically without additional systemic symptoms. In contrast, cervical spondylosis presents more complex symptoms—besides neck pain, it may also cause numbness and weakness in the limbs, dizziness, nausea, and in severe cases, can even affect vision, heart rate, and swallowing function. 3. Treatment difficulty: Neck sprain is usually a short-term condition that often resolves spontaneously or improves with simple treatments. Cervical spondylosis, however, is more challenging to treat, often requiring prolonged therapy and rehabilitation, and is prone to recurrence.