Some researchers believe that people with panic disorder may have respiratory drive systems that are especially sensitive to low levels of carbon dioxide. Data from pilot studies suggest this is the case, and we want to be able to confirm that. If researchers do confirm this, Coryell adds, then the test could be a useful tool in identifying a gene for the disorder. Participants will be interviewed and asked to complete a questionnaire, give a blood sample, and undergo two breathing tests. Participation in the study will last approximately three to five hours.
Compensation is available.