Hi Rob!   First, are you sure it's a Migraine that you are getting? Between the Decadron and your abortive, you could be experiencing Medication Overuse Headache.   I'm sure you are aware, as you said in your question, that taking Maxalt every day is not a good idea. This can lead to MOH, as well as the steroid in your chemo, could very well be leading to this.   Have you talked to your doctor about this? I would bring this up and see what he/she thinks. Maybe give your neurologist or whomever treats you for Migraine a call and see if there is something that can be done to avoid this from happening.   Good luck! I wish you a quick recovery!!