Hi,
Greetings s/w engineer,
Hope your profession also one among the cause for your neck stiffness. Please follow the below things carefully.
1. Neck stretching exercise for SGM muscles
2. MFR to the Upper trapizius, Rhomboids
3. Functional release to abductor & internal rotator
4. Hot pack apply over pain area
5. Follow the correct sitting posture
6. Maintain good ergonomics
Next Steps
Consult with Physiotherapy clinic
Health Tips
Avoid forward neck posture
if need use cervical collar short time to release pain.