Hi. Thanks for your query. Noted your history of steroid injection in the cervical area followed by nausea, sweating, pain and spasm down the right side of the throat down to the shoulder. No migraine, pain, nausea medicines are helping to relieve the symptoms. This is definitely a serious problem and the probable cause are: The probable causes are hematoma formation, infection, cellulitis and so on. I would advise you the following: Tests of blood for CBC to see for WBC counts - Clinical evaluation and examination by a Surgeon MRI of the whole neck to see the extent of infection and to assess whether surgery is required. Antibiotic cover along with anti-inflammatory medicines. Bed rest All these things will help for an early diagnosis and proper treatment.