This may be combination of 2 separate conditions; 1. throat pain due to acid reflux or infection and 2.neck pain due to muscle spasm
or there can be some other condition that involved both regons together
Next Steps
1. Visit Physiotherapist for neck physiotherapy and exercises
2. Visit ENT for throat examination and if required CT scan will be advised by him
Health Tips
u can try acid medicines for few days and see if there is any improvement in throat symptoms