The Identification and Characterization of Autonomic Dysfunction in Migraineurs With and Without Auras

This is a study to compare subject response and symptoms resulting from administration of three clinical assessments. \* The 3 assessments are 1. passive upright tilt table testing, 2. quantitative sudomotor axon reflex testing (QSART)and 3. punch biopsy. The comparison of results will be from two subject groups: * Group A, the migraine suffering patient with or without aura * Group B, the migraine suffering patient with or without aura who has diagnosed orthostatic intolerance (i.e.,feeling dizzy or faint when making a body position change).