The sign and symptom you are describing is for pharyngitis
and it is a type of infection of the pharynx and present as sore throat
, neck pain
and difficulty in swallowing.
The infection can be viral or bacterial in nature and depedning upon the sign and symptom and severity and after exmamination and investigation drugs including antibitotics can be prescribed.
In the meantime you can use saline warm gargle which will help to improve your condition and have a consultation with your doctor for this problem.
Thanks and take care