If I read correctly, you are in Carrollton? I am a 30 year cluster headaches sufferer and am currently suffering. I am very sorry for your sons pain. If I can help answer any questions please let me know. I have tried every med over 30 years. I am currently on predizone, topamax, oxygen, and imitrex. I also had radiation surgery in Birmingham 15 years ago.(Gamma Knife)I still have to call my insurance company every time and explain my situation and have the doctors office call for prescription overrides. I just did that yesterday. Good Luck.