Then, indeed go to the doctor if you think all the problems are from your diagnosed condition. If you have Chiari Malformation then I am surprised that nobody is monitoring you, some specialist/consultant or other as you have this condition. (oh, and I just looked up symptoms and don't see heart issues associated with it)I think my brain stem could be compressed I read that it can happen in chiari.. It can cause the heart arrhythmia, dizziness, and unsteadiness..