There can be a possibility of abnormailty in spine at neck level leading to cervical cord compression.
Have you noticed this abnormal posture and uneven shoulders yourself.. if it is prominent, it should be further confirmed to rule out any bony deformity..
Next Steps
You can get x ray of cervical spine and dorsal spine to rule out any abnormality...
Health Tips
You can start with
Vitamin B12 supplement for now along with
Vitamin D supplement..