Causes. 1  Asthma. 2  Pregnancy. 3  Deconditioning. 4  Hiatal hernia. 5  Pneumothorax. 6  Cardiac failure. 7  Pulmonary edema. 8  Sarcoidosis. 9  Interstitial lung diseases.
Mars Hill, North Carolina. Mars Hill is a town in Madison County, North Carolina, United States. The population was 1,869 at the 2010 U.S. Census. It is the home of Mars Hill University, the name of which was inspired by Acts 17:22. The town is located 15 miles (24 km) due north of Asheville, western North Carolina's largest city.
Chapel Hill is located in the southeast corner of Orange County. It is bounded on the west by the town of Carrboro and on the northeast by the city of Durham. However, most of Chapel Hill's borders are adjacent to unincorporated portions of Orange and Durham Counties rather than shared with another municipality.