Would imitrex ever help any other type of headache other than a migraine? can you assume new headache is a migraine if it helped even though it comes back consistently? ive had a new daily headache for three weeks and want my doctor to do imaging?

Imitrex may be effective with other headache such as cluster headache which you may have.

Three weeks of daily headaches warrant an accurate diagnosis & proper treatment. I recommend your consulting a neurologist for evaluation, appropriate testing and proper treatment.

Many migraineurs have a variety of headache presentations, yet most of these dissimilar appearances represent migraine events nonetheless, and indeed, triptans like Imitrex will often prevent full-blown issues. Since you are having daily headaches, you need to consider prevention to break up pattern. A neurologist can design an effective program.