Hello Thank you for trusting HCM Dear he may be developed mastoiditis. Mastoiditis is the result of an infection that extends to the air cells of the skull behind the ear. Specifically, it is an inflammation of the mucosal lining of the mastoid antrum and mastoid air cell system inside the mastoid process. In some cases, mastoiditis may result in the development of a brain abscess or other complications involving your skull. The symptoms of these conditions include severe headaches and swelling behind your eyes. Above conditions may need surgery. please consult your ENT surgeon he will examine and treat you accordingly. Take care.