Hi Charlie,

Honestly, your description does not sound like Lhermitte's sign. Lhermitte's is strictly about flexing the neck and having abnormal sensations. Have you tried just bending your neck down and not your back?

If so and if you do not have any abnormal sensation I would question your Neurologist carefully and in detail about when and what you are doing to elicit the sensations you have.

Any description you research about lhermittes will all return the same description about flexing or bending the neck.

http://neurology.about.com/b/2013/04...ittes-sign.htm

http://www.msfocus.org/article-detai...?articleID=331