City & CountyStatistics. Sullivan County is a county located in the U.S. state of Indiana, and determined by the U.S. Census Bureau to include the mean center of U.S. population in 1940. As of 2010, the population was 21,475. The county seat is Sullivan. Sullivan County is included in the Terre Haute, Indiana, Metropolitan Statistical Area.
1 Obsessive compulsive disorder (OCD) is an anxiety disorder characterized by irresistible thoughts or images (obsessions) and/or rigid rituals/behaviors that may be driven by obsessions (compulsions).
Close to 3 per cent of people in Australia experience OCD in their lifetime and approximately 2 per cent in a 12 month period.1. OCD can occur at any time during your life and children as young as six or seven may have symptoms, although symptoms seem to develop fully for the first time in adolescence. What causes OCD? OCD is thought to develop from a combination of genetic and environmental factors. A number of factors may increase the risk of developing OCD, including family history, social factors and psychological factors. Other factors specific to OCD include: 1  Biological factors â OCD has been linked to several neurological factors and irregular levels of serotonin (a chemical that transmits messages between brain cells) in particular. Research into chemical, structural and functional changes or abnormalities in the brain continues.