<s>[INST] Hi doctor, I have left-sided headaches from the last five days. I notice it more when I chew food. I have anxiety problems since last two years, for which I take Petril 0.25 daily. Please help me. How to get rid of these headaches? [/INST] Hi. I read your query and understand your concerns. I will be glad to help you further. Thanks and regards. For more information consult a neurologist online --> </s>