Psychogenic
Disease
Classified as a
"conversion disorder" by the DSM-IV, a psychogenic disease is a
disease in which mental stressors cause physical symptoms of different
diseases. The manifestation of physical symptoms without biologically
identifiable causes results from disruptions of processes in the brain from
psychological stress. During a psychogenic disease, neuroimaging has shown that
neural circuits affecting functions such as emotion, executive functioning,
perception, movement, and volition are inhibited. These disruptions become
strong enough to prevent the brain from voluntarily allowing certain actions
(e.g. moving a limb). When the brain is unable to signal to the body to perform
an action voluntarily, physical symptoms of a disease are presented even though
there is no biological identifiable cause. Examples of diseases that are
believed by many to be psychogenic include psychogenic seizures, psychogenic
polydipsia, psychogenic tremor, and psychogenic pain.
The term psychogenic disease
is often used in a similar way to psychosomatic disease. However, the term
psychogenic usually implies that psychological factors played a key causal role
in the development of the illness. The term psychosomatic is often used in a broader
way to describe illnesses with a known medical cause where psychological
factors may nonetheless play a role (e.g., asthma can be exacerbated by
anxiety).
Diagnosis
With the advent of medical
screening technologies, such as electroencephalography (EEG) monitoring,
psychogenic diseases are becoming much more common as medical professionals
have increasingly precise tools to monitor patients. When a patient does not
display typical markers of a disorder that could show up from medical exams,
physicians typically diagnose a patient's symptoms as being psychogenic.
Research into understanding psychogenic disorders has led to the development of
both electronic diagnostic tests for ruling out the usual biological markers of
a disorder and new clinical observation procedures. An example of something a
physician would look for when testing for psychogenic symptoms is if the
symptom changes with suggestion (e.g. a patient is told to use a tuning fork to
aid symptoms in a movement disorder).
Despite the understanding of
psychogenic symptoms, there are some problems with the assumption that all
medically unexplained illness must have a psychological cause. It remains
possible that genetic, biochemical, electrophysiological, or other
abnormalities may be present which we do not have the technology or background
to identify. Some patients may also have their symptoms
diagnosed as psychogenic even with a lack of evidence to suggest there are
psychological causes. Misdiagnoses of psychogenic disease may be simply
accidental, but they can also come from bias. For example, a doctor with a bias
towards men may tell women that their symptoms are psychogenic, despite them
being actual symptoms for a physical disease. This would then be contrasted
with a man experiencing the same symptoms being treated differently, with the
physical disease being detected.
Jan Ricks Jennings, MHA, LFACHE,
Senior Consultant
Senior Management Resources,
LLC
JanJenningsBlog.Blogspot.com
412.913.0636 Cell
724.733.0509 Office
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