Celiac disease is an uncommon disease in which your immune system attacks the cells lining the small intestine. Signs and symptoms of celiac disease may include: 1  diarrhea,  bloating,
In humans, disease is often used more broadly to refer to any condition that causes pain, dysfunction, distress, social problems, or death to the person afflicted, or similar problems for those in contact with the person.orbidity (from Latin morbidus, meaning sick, unhealthy) is a diseased state, disability, or poor health due to any cause. The term may be used to refer to the existence of any form of disease, or to the degree that the health condition affects the patient.
What Causes Autoimmune Disease? No one is really sure what exactly is responsible for causing autoimmune disease. However, doctors have several theories of what may be causing them, such as a virus or bacteria that confuses the immune system and makes it think that healthy tissue is actually an antigen, which in turn causes the immune system to attack perfectly healthy tissue.