Unfortunately it is difficult to tell what is wrong without a full history and examination. Important things to look at would include how long you’ve had it, exactly where it is, what happened when it started and if you have any cough, shortness of breath or any other related symptoms. Examination would also be very important.
It does sound more muscular. Tension headaches (which feel like a tight pressing band around the head) also occur as a result of muscle tightness. Have you been quite stressed lately? Pain killers and muscle relaxants don’t always work for muscle tension, however I am surprised that there is no response to physiotherapy.
Did your Dr and your physio have the same diagnosis? If they did chat with them about what else you can do. If there is still no improvement or you are not convinced of the diagnosis then I suggest going to someone else for a second opinion.
Dr Gabriell Prinsloo