yes, my son did have seizures when he was actively having fevers. When he was 4 years old he had his tonsils and adenoids removed (something I had read about in studies of periodic fever syndrome happening in Australia) and his fevers have gone away. He still has some residual effects - mouth ulcers, joint pain, some fatigue, but he is so much healthier than he used to be. He is now almost 8 years old. His fevers came every 10 days and would get as high as 104 degrees +. He had seizures very frequently. Typically giving a dose of prednisone at the first onset of the fever would break the cycle. The doctor that treated Cameron is an immunologist - he was quite knowledgeable and very willing to talk to me about the research that I had done. Let me know if I can be of further help.