This completely because of wrong posture leads to the weakness of the neck and shoulder muscles
Next Steps
Visit nearest Physiotherapy clinic for complete assessment and treatment
Start with electro therapy modalities like US and IFT for pain relief
Then Start Neck and shoulder muscles strengthening exercises
Neck Isometric exercises
Health Tips
Maintain ergonomic posture while sitting for longer hours
Support your back while working in front of a computer
Take often breaks
Slight stretching exercises may relax the muscles
Use hot pack application for 2-3 times a day