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Indexed under : Medicine / Diseases / G - L

Wikenigma - an Encyclopedia of Unknowns Wikenigma - an Encyclopedia of the Unknown

Hypofrontality

Hypofrontality refers to a decreased blood flow in the frontal cortex of the human brain. Some studies rate the decease at round 5%. (example ref.) It was first discovered in 1974, and was initially assumed to be due to anti-psychotic drugs which patients were taking. But subsequent studies confirmed the findings in patients who were not undergoing treatment.

It's now known to be associated with Attention-Deficit / Hyperactivity Disorder (ADHD)plugin-autotooltip__plain plugin-autotooltip_bigAttention-Deficit / Hyperactivity Disorder (ADHD)

Attention Deficit Hyperactivity Disorder (ADHD) is a neuro-developmental mental disorder. It's characterized by problems in paying attention, excessive activity, or difficulty in controlling behavior (typically not appr…
, Schizophreniaplugin-autotooltip__plain plugin-autotooltip_bigSchizophrenia

"Schizophrenia is a mental disorder characterized by abnormal social behavior and failure to understand what is real. Common symptoms include false beliefs, unclear or confused thinking, auditory and visual hallucinations, reduced social engagement and e…
and Major Depressive Disorderplugin-autotooltip__plain plugin-autotooltip_bigMajor Depressive Disorder

Major depressive disorder (MDD), also known simply as depression, is a mental disorder characterized by at least two weeks of pervasive low mood.

Current estimates are that severe depression affects around 2% of the global population at any g…

It's not known, however, if the decreased blood flow is as a result of the underlying psychological disorder, or whether it's contributing to cause the disorder. Or whether they occur alongside each other.

Currently, the exact neurophysiological mechanisms that cause hypofrontality are unknown. However, there are some possible mechanisms that are plausible and would account for many of the effects of hypofrontality

Source : Wikipedia

The dominant current theory is that there is some kind of neuronal damage which leads to poor neuro-transmission, and which then causes both the psychological problems and the hypofrontality.

Because of the possibility that hypofrontality may be causing the psychological problems, it's currently the subject of intense research - as it may be feasible to increase the bloodflow and relieve the symptoms.

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