Do people who feign medical illness have any other mental health disorder?

Most people with factitious disorder also suffer from other mental disorders and in particular personally disorders. These people often have different thoughts, behavior and clearly stand apart from the norm. They also tend to have labile moods, be impulsive, angry and passive. They also have a lack of ability to cope with problems and most have had very poor interpersonal relationships.

There are a variety of factitious disorders- some may mimic a mental illness and others may mimic a physical disorder like a heart attack. There is also factitious disorder by-proxy where the individual fabricates symptoms of an illness in another person, especially a child.