<s>[INST] For the past 4 days I ve been feeling a tight, muscle strain feeling in my forehead. It feels like I m constantly straining to raise my eyebrows and my forehead and eyes will not relax. Any idea what may be the cause of this? Thank you for your help. Rebecca [/INST] Hi, I have gone through your question and understand you concern. This seems to be a typical tensile type headache, the most common type of headache. This normally would last for 3 days at max, and it should not prevent you from doing the usual activity. Still, if it lasts longer, or gets worse I would recommend a cranial CT (which would also see the sinuses), because the second option in my opinion would be an involvement of the sinuses. So, if the pain goes away, I would consider it a normal tensile headache, with nothing to worry about, and no real preventive treatment, nor curative one.Otherwise, you should have a cranial CT Hope this answers your question. If you have additional questions or follow-up questions then please do not hesitate in writing to us. I will be happy to answer your questions. Wishing you good health. </s>