I have had headaches for the past 18 months on and off, however over the past six months i have had headaches everyday, i have been taking upto the maximum doesage of painkiller each day for the past four weeks now and nothing seems to be working. I have had an MRI scan which ruled out any tumor. I had a small car accident around 18 months ago and my shoulder is extremely sore everyday, i use ralgex, had physio but nothing seems to work on it. Do you think this could be the primary cause of my headache and what should i do next, i cant go on with these everyday its stopping me from doing everyday activity. Please help thanks xx