Hello Tapamaus,
Can you pinpoint any particular part of your spine or your pain in the back is more diffused and generalised? does it affect just one side or it crosses? How did that happen? Can you recognise an onset?There are any aggravating/relieving factors a part from crossing your legs? does it improve or worsen with specific movement such bending forward or backward or maybe twisting?Where exactly this numbness is felt? have u got any other funny sensations as pins and needles or muscle weakness? there are any specific daily pattern? Has the radiation ever gone down to your calf or toe? how is it progressing? is it getting worse or better? Have you noticed any change in bowel habits or passing water? Have you had scans for that problem?
Let us know
Emanuele