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.
Infectious disease is disease caused by a pathogen which enters the body and triggers the development of an infection.These diseases have a range of causes, and they can be found all over the world.any of these diseases make the body vulnerable to secondary infections, in which other organisms move in to take advantage of a weakened immune system, and this can be very problematic. Ad. The study of infectious disease is known as epidemiology.