Since your CT scans are normal, structural issues like tumors or sinus infections are ruled out. Your daily headaches are likely chronic migraines, tension headaches, or medication-overuse headaches. Avoid overusing over-the-counter painkillers, as this can actually worsen headaches. For daily headaches, prescription preventive medications (such as beta-blockers, amitriptyline, or topiramate) are typically used to reduce frequency. I highly recommend consulting a neurologist or your primary care physician to receive a tailored treatment plan, keep a headache diary, and identify potential triggers. Please do not start new prescription medications without a doctor's evaluation.