Crohn's disease is a type of inflammatory bowel disease. It causes inflammation in the digestive tract, which can lead to severe symptoms. The inflammation often spreads deep into the layers of affected bowel tissue. Crohn's disease can be painful and sometimes may lead to life-threatening complications. Symptoms of Crohn's Disease Symptoms of Crohn's disease vary from mild to severe. Common symptoms include diarrhea, fever, fatigue, abdominal pain and cramping. People with Crohn's disease might also experience blood in their stool, mouth sores, reduced appetite and weight loss. The disease can affect different parts of the digestive tract in different people. The symptoms can change over time, with periods of severe symptoms (flares) and periods of no or mild symptoms (remission). Causes and Risk Factors The exact cause of Crohn's disease remains unknown. However, several factors may contribute to its development. These include immune system malfunctions, genetics and environmental factors. Crohn's disease tends to run in families, suggesting a genetic link. Smoking increases the risk of developing the disease and can make symptoms worse. People living in urban areas or industrialized countries have a higher risk, possibly due to diet and lifestyle factors. (more…)