I am a 32 year old female and I have been diagnosed with persistent migraine aura for the past 7 months. I was previously living in the Caribbean where I attended medical school for the 8 months prior to this. I don't feel as though the diagnosis is correct as I have only had 2 migraine headaches in the past and none of the treatments have worked thus far. I have had all the tests done, MRI brain & neck, CT angio head, lumbar puncture, etc. and all are normal. I continue to experience light sensitivity, burning in my head, poor night vision and its like I can see little things moving in my eyes. I have just recently tested high for mercury and I am presently being treated with DMSA, a chelator. I am now wondering if there is a possibility of parasites, since I lived in the Caribbean and ate a lot of the local fish, etc. Any thoughts would be much appreciated.