ical records, and/or interviews with others, are found to lie more extensively than needed for
immediate self-protect ion are diagnosed with factitious disorder imposed on another.
Somatic symptom disorder. In somatic symptom disorder, there may be excessive at-
tention and treatment seeking for perceived medical concerns, but there is no evidence that
the individual is providing false info rmation or behaving deceptively. 
Malingering. Malingering is differentiated from fact itious disorder by the intentional re-
porting of symptoms for personal gain (e.g., money, time off work). In contrast, the diag-
nosis of factitious disorder requires  the absence of obvious rewards. 
Conversion disorder (functional neurological symptom disorder). Conversion disorder
is characterized by neurological symptoms that  are inconsistent with neurological patho-
physiology. Factitious disorder with neurological symptoms is distinguished from con-
version disorder by evidence of de ceptive falsification of symptoms. 
Borderline personality disorder. Deliberate physical self-harm in the absence of suicidal
intent can also occur in association with other mental disorders su ch as borderline person-
ality disorder. Factitious disord er requires that the induction of injury occur in association
with deception. 
Medical condition or mental disorder not associated with intentional symptom falsifi-
cation. Presentation of signs and sy mptoms of illness that do not conform to an identi-
fiable medical condition or mental disorder increases the likelihood of the presence of a
factitious disorder. However, the diagnosis of factitious disorder does not exclude the
presence of true medical cond ition or mental disorder, as comorbid illness often occurs in
the individual along with factitious disord er. For example, individuals who might manip-
ulate blood sugar levels to produce symptoms may also have diabetes.