I've had migraines since I was 18, and they became chronic and much more severe when I was about 24 (I'm 27 now). I began seeing a neurologist regularly, tried all the usual preventative meds, and finally Botox. The Botox worked AMAZINGLY for the first 5-6 rounds of injections. By the 7th round of injections, it stopped working about 2 weeks after. By the 8th round, it was working even less. After the 9th round my doctor suggested we stop because it was no longer helping me. My question is: Could it start working again in the future? My doctor said it stops working because the body builds antibodies to the Botox... I'm wondering if anyone has stopped injections and then tried again after, say, 2 years break?