A study at St. Louis University is looking for participants who must have heachache of nasal and sinus origin; this diagnosis will be confirmed at the initial office assessment. After enrollment, participants will self- administer a nasal spray that contains capsaicin, a naturally occurring compound that is found in red peppers. more details at http://www.slucare.edu/research/redpepper.shtml and http://www.abcnews.com/sections/scitech/madrad/index.html