I started Gabapentitn for back pain a few weeks ago and after my first dose, I immediately started having severe headaches which started first thing in the morning. It was awful. I stopped taking it and the headaches went away. My doctor prescribed Lyrica with the same results. With Lyrica, the headaches didn't start right away, but gradually. It seems to start mid-day and doesn't go away either. I've now stopped both and the headaches are even worst. Any one have similar problems?