Munchausen syndrome is the state by which a person fakes some illness or injury on self, for getting treated like a patient. The name is given after the German man, Baron Munchausen who was telling fantasy stories about his illness.
The exact cause of this syndrome is not known. It is believed that mentally affected people follow this condition on the pretext of hiding his aggressive behavior and sexual impulses. However, this problem is purely psychological in nature.
Symptoms of this syndrome are always imaginary and exaggerated. The affected person will tell lies about fake symptoms and sometimes cause self injury to make others believe his story. They even go to the extent of changing urine samples for getting negative results. Other symptoms are willingness to undergo tests and diagnosis, changing hospitals and doctors frequently, dramatic medical illness and telling fake symptoms.