The Neurology Clinic at Texas Children's Hospital is conducting a randomized, double-blind, placebo-controlled clinical trial for children with Tuberous Sclerosis Complex (TSC). The purpose of this clinical trial is to study the safety and effectiveness of the drug Everolimus in patients with TSC who have refractory partial onset seizures. If you or your child is at least 2 years old and less than 65 years old, he or she may be eligible for this study.