Hello Welcome in H.C.M. for consultation. I have gone through your query regarding severe pain in ear and neck. As you said that you are given antibiotic levosome and steroid predisone for your sinus infection. You have not any previous history of ear disease in the form of ear discharge, and heard of hearing etc. Considering your complaints and assuming as your ears were normal before, your sinus infection has reached up to throat and via Eustachian tube it has reached to middle ear thus giving rise to severe pain in ears and the area behind the ear in the neck. you are advice to go for these investigations- (1) C.T.scan of paranasal sinuses. (2) Culture and sensitivity of throat swab. (3) Pure tone audiometery. A thorough examination of ear, nose and throat is necessary and after its co-relation with inferences of investigations one can made proper diagnosis and that can be accordingly plan for treatment. With Regards.