Medical Record Information: Subjects will be asked questions that address medical and environmental factors potentially related to disease expression, course, and complications. These questions include details about age at onset, family history of defined disease criteria, cigarette smoking history, disease site designation, HLA-type (potential disease modifier), inflammatory pattern, presence of pANCA, ASCA, or other serological markers, and response to specific medical interventions. Information from any disease-related indices such as the Harvey Bradshaw Index or Mayo Score may be collected. In addition medical records will be reviewed for details related to disease location, including colonoscopy, radiology and pathology reports, types of surgery, extraintestinal manifestations, laboratory results, and other information related to the patients’ symptoms, diagnoses and treatment for IBD. Patient medical data can be followed prospectively through the electronic health record system to identify new events including but not limited to new medications, change in laboratory findings, new imaging/endoscopy/pathology findings, change in disease phenotype, new medical problems, surgeries, hospitalizations, and complications.