Hello, so do u get pins and needles sensation in your hands and legs along with back /neck pain then that is a mechanical pain in nature.
Getting such sensation is suggestive of having disc buldges in your spine which hurts the nerve.
Next Steps
Maintain good posture, avoid all those activities which gives rise to such sensations.
You should do physiotherapy treatment for this problem which involves your core muscle strengthening, perhaps it would reduce such sensations and prevent recurrences
Health Tips
Then sensations changing to numbness happens when it turns worse....so make sure you get yourself checked and treated