Thanks for choosing health care magic for posting your query.
I have gone through your question in detail and I can understand what you are going through.
The kind of knot that you are describing could be a dilated vein. The same gives a watery feeling when we press it. Its not harmful unless it is causing pain. The numbness
and pain that you are describing over hands and arms could be due to cervical spondylosis
. The same needs to be confirmed with MRI
scan of the cervical spine
Hope I am able to answer your concerns.
If you have any further query, I would be glad to help you.
In future if you wish to contact me directly, you can use the below mentioned link:
Wish you good health,
Dr. Srikanth Reddy M.D.