Hi my name is michael and i am new on here. i have been diagnosed with arnold chiari malformation and have had 2 surgeries. A craniectomy and a cervical lamenectomy. the first was done in june of 2006 and the second in march of 07. within the last couple of months or so i have been having headaches in the back of my head again and also neck pain but i had another MRI done and i was told everything looked normal with the surgeries ive had. also in the last few months ive been diagnosed with hyperthyroidism. ive been having chest pains and shortness of breath but was told it was caused by the hypertyroidism. here lately through a friend ive been told that the arnold chiari malformation can cause the chest pains and the shortness of breath. i was wondering if anyone else has been through this and has had the same symptoms and maybe some possibilities on where i should go from here. any information would appreciated.