Lhermitte sign is a sudden, uncomfortable sensation that travels down the neck to the spine when flexing the neck. It can be a symptom of conditions affecting the spinal cord, like multiple sclerosis.

If you’ve ever had a crick in your neck—you know, one of those sudden, stabbing, tingly pains that seemingly strikes without warning—you can imagine how much your life would be affected if you were ...

• Neck pain is a common symptom for individuals with MS due to the central nervous system’s role in transmitting signals through the spinal cord. • Specific types of neck pain, like Lhermitte’s sign ...